258736042 has 8 divisors (see below), whose sum is σ = 398593476. Its totient is φ = 125871552.

The previous prime is 258736021. The next prime is 258736069. The reversal of 258736042 is 240637852.

It can be written as a sum of positive squares in 2 ways, for example, as 257891481 + 844561 = 16059^2 + 919^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 258735992 and 258736010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748143 + ... + 1748290.

Almost surely, 2^258736042 is an apocalyptic number.

258736042 is a deficient number, since it is larger than the sum of its proper divisors (139857434).

258736042 is a wasteful number, since it uses less digits than its factorization.

258736042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496472.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 258736042 is about 16085.2740728904. The cubic root of 258736042 is about 637.2144907342.

The spelling of 258736042 in words is "two hundred fifty-eight million, seven hundred thirty-six thousand, forty-two".