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1245139026 = 23207523171
BaseRepresentation
bin100101000110111…
…0101000001010010
310012202221121122020
41022031311001102
510022223422101
6323315352310
742566335635
oct11215650122
93182847566
101245139026
1158993741a
122a8bb2696
1316ac6a171
14bb51dc1c
15744a5136
hex4a375052

1245139026 has 8 divisors (see below), whose sum is σ = 2490278064. Its totient is φ = 415046340.

The previous prime is 1245139019. The next prime is 1245139031. The reversal of 1245139026 is 6209315421.

It is a sphenic number, since it is the product of 3 distinct primes.

1245139026 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103761580 + ... + 103761591.

It is an arithmetic number, because the mean of its divisors is an integer number (311284758).

Almost surely, 21245139026 is an apocalyptic number.

1245139026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245139026 is a wasteful number, since it uses less digits than its factorization.

1245139026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207523176.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1245139026 is about 35286.5275423922. The cubic root of 1245139026 is about 1075.8191775901.

The spelling of 1245139026 in words is "one billion, two hundred forty-five million, one hundred thirty-nine thousand, twenty-six".

Divisors: 1 2 3 6 207523171 415046342 622569513 1245139026