75942013 has 6 divisors (see below), whose sum is σ = 88340766. Its totient is φ = 65093112.

The previous prime is 75942007. The next prime is 75942023. The reversal of 75942013 is 31024957.

It can be written as a sum of positive squares in only one way, i.e., 62125924 + 13816089 = 7882^2 + 3717^2 .

It is a de Polignac number, because none of the positive numbers 2^k-75942013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75942023) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 774870 + ... + 774967.

It is an arithmetic number, because the mean of its divisors is an integer number (14723461).

Almost surely, 2^75942013 is an apocalyptic number.

It is an amenable number.

75942013 is a deficient number, since it is larger than the sum of its proper divisors (12398753).

75942013 is a wasteful number, since it uses less digits than its factorization.

75942013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549851 (or 1549844 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 75942013 is about 8714.4714699172. The cubic root of 75942013 is about 423.4746017599.

The spelling of 75942013 in words is "seventy-five million, nine hundred forty-two thousand, thirteen".