258243042 has 16 divisors (see below), whose sum is σ = 521501760. Its totient is φ = 85245072.

The previous prime is 258243031. The next prime is 258243043. The reversal of 258243042 is 240342852.

It is not an unprimeable number, because it can be changed into a prime (258243043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208317 + ... + 209552.

It is an arithmetic number, because the mean of its divisors is an integer number (32593860).

Almost surely, 2^258243042 is an apocalyptic number.

258243042 is an abundant number, since it is smaller than the sum of its proper divisors (263258718).

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

258243042 is a wasteful number, since it uses less digits than its factorization.

258243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417977.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 258243042 is about 16069.9421903129. The cubic root of 258243042 is about 636.8095136775.

Adding to 258243042 its reverse (240342852), we get a palindrome (498585894).

The spelling of 258243042 in words is "two hundred fifty-eight million, two hundred forty-three thousand, forty-two".