258422042 has 4 divisors (see below), whose sum is σ = 387633066. Its totient is φ = 129211020.

The previous prime is 258421991. The next prime is 258422051. The reversal of 258422042 is 240224852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 178516321 + 79905721 = 13361^2 + 8939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 258421996 and 258422014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64605509 + ... + 64605512.

Almost surely, 2^258422042 is an apocalyptic number.

258422042 is a deficient number, since it is larger than the sum of its proper divisors (129211024).

258422042 is a wasteful number, since it uses less digits than its factorization.

258422042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129211023.

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 258422042 is about 16075.5106295259. The cubic root of 258422042 is about 636.9566135764.

Adding to 258422042 its reverse (240224852), we get a palindrome (498646894).

The spelling of 258422042 in words is "two hundred fifty-eight million, four hundred twenty-two thousand, forty-two".