| Base | Representation |
|---|---|
| bin | 10000100110011… |
| … | …10000011101000 |
| 3 | 100201000221101010 |
| 4 | 20103032003220 |
| 5 | 241122143130 |
| 6 | 21452423520 |
| 7 | 3310441200 |
| oct | 1023160350 |
| 9 | 321027333 |
| 10 | 139256040 |
| 11 | 71674140 |
| 12 | 3a777ba0 |
| 13 | 22b09831 |
| 14 | 146cd400 |
| 15 | c35b0b0 |
| hex | 84ce0e8 |
139256040 has 192 divisors, whose sum is σ = 530400960. Its totient is φ = 28922880.
The previous prime is 139256009. The next prime is 139256071. The reversal of 139256040 is 40652931.
It is an interprime number because it is at equal distance from previous prime (139256009) and next prime (139256071).
It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a junction number, because it is equal to n+sod(n) for n = 139255989 and 139256007.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63604 + ... + 65756.
It is an arithmetic number, because the mean of its divisors is an integer number (2762505).
Almost surely, 2139256040 is an apocalyptic number.
139256040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 139256040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265200480).
139256040 is an abundant number, since it is smaller than the sum of its proper divisors (391144920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139256040 is a wasteful number, since it uses less digits than its factorization.
139256040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2192 (or 2181 counting only the distinct ones).
The product of its (nonzero) digits is 6480, while the sum is 30.
The square root of 139256040 is about 11800.6796414444. The cubic root of 139256040 is about 518.3280123614.
The spelling of 139256040 in words is "one hundred thirty-nine million, two hundred fifty-six thousand, forty".
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