78735042 has 24 divisors (see below), whose sum is σ = 170767740. Its totient is φ = 26218080.

The previous prime is 78735023. The next prime is 78735043. The reversal of 78735042 is 24053787.

It can be written as a sum of positive squares in 2 ways, for example, as 78694641 + 40401 = 8871^2 + 201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78734988 and 78735006.

It is not an unprimeable number, because it can be changed into a prime (78735043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24192 + ... + 27252.

Almost surely, 2^78735042 is an apocalyptic number.

78735042 is an abundant number, since it is smaller than the sum of its proper divisors (92032698).

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

78735042 is a wasteful number, since it uses less digits than its factorization.

78735042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498 (or 4495 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78735042 is about 8873.2768468024. The cubic root of 78735042 is about 428.6038039352.

The spelling of 78735042 in words is "seventy-eight million, seven hundred thirty-five thousand, forty-two".