Base | Representation |
---|---|
bin | 10000111011100… |
… | …01000110110000 |
3 | 100220020102020112 |
4 | 20131301012300 |
5 | 242324133130 |
6 | 22032000452 |
7 | 3343105340 |
oct | 1035610660 |
9 | 326212215 |
10 | 142021040 |
11 | 73192567 |
12 | 3b690128 |
13 | 23567225 |
14 | 14c0cd20 |
15 | c705495 |
hex | 87711b0 |
142021040 has 40 divisors (see below), whose sum is σ = 377371680. Its totient is φ = 48692736.
The previous prime is 142021031. The next prime is 142021057. The reversal of 142021040 is 40120241.
It is a tau number, because it is divible by the number of its divisors (40).
It is a Harshad number since it is a multiple of its sum of digits (14).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126245 + ... + 127364.
It is an arithmetic number, because the mean of its divisors is an integer number (9434292).
Almost surely, 2142021040 is an apocalyptic number.
142021040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
142021040 is an abundant number, since it is smaller than the sum of its proper divisors (235350640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
142021040 is a wasteful number, since it uses less digits than its factorization.
142021040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 253629 (or 253623 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 14.
The square root of 142021040 is about 11917.2580739027. The cubic root of 142021040 is about 521.7361104576.
Adding to 142021040 its reverse (40120241), we get a palindrome (182141281).
The spelling of 142021040 in words is "one hundred forty-two million, twenty-one thousand, forty".
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