78952842 has 24 divisors (see below), whose sum is σ = 172638180. Its totient is φ = 26075520.

The previous prime is 78952823. The next prime is 78952843. The reversal of 78952842 is 24825987.

78952842 is a `hidden beast` number, since 7 + 89 + 528 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77105961 + 1846881 = 8781^2 + 1359^2 .

It is not an unprimeable number, because it can be changed into a prime (78952843) 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 11 ways as a sum of consecutive naturals, for example, 18159 + ... + 22082.

Almost surely, 2^78952842 is an apocalyptic number.

78952842 is an abundant number, since it is smaller than the sum of its proper divisors (93685338).

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

78952842 is a wasteful number, since it uses less digits than its factorization.

78952842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40358 (or 40355 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 78952842 is about 8885.5411765407. The cubic root of 78952842 is about 428.9986470363.

The spelling of 78952842 in words is "seventy-eight million, nine hundred fifty-two thousand, eight hundred forty-two".