258636042 has 48 divisors (see below), whose sum is σ = 642437952. Its totient is φ = 73664640.

The previous prime is 258636017. The next prime is 258636083. The reversal of 258636042 is 240636852.

258636042 is a `hidden beast` number, since 2 + 586 + 36 + 0 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 258635988 and 258636006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39417 + ... + 45507.

It is an arithmetic number, because the mean of its divisors is an integer number (13384124).

Almost surely, 2^258636042 is an apocalyptic number.

258636042 is an abundant number, since it is smaller than the sum of its proper divisors (383801910).

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

258636042 is a wasteful number, since it uses less digits than its factorization.

258636042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6440 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 258636042 is about 16082.1653392819. The cubic root of 258636042 is about 637.1323869040.

The spelling of 258636042 in words is "two hundred fifty-eight million, six hundred thirty-six thousand, forty-two".