258277042 has 4 divisors (see below), whose sum is σ = 387415566. Its totient is φ = 129138520.

The previous prime is 258277031. The next prime is 258277067. The reversal of 258277042 is 240772852.

It is a Cunningham number, because it is equal to 16071²+1.

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., 258277041 + 1 = 16071^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 258276992 and 258277010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64569259 + ... + 64569262.

Almost surely, 2^258277042 is an apocalyptic number.

258277042 is a deficient number, since it is larger than the sum of its proper divisors (129138524).

258277042 is a wasteful number, since it uses less digits than its factorization.

258277042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129138523.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 258277042 is about 16071.0000311119. Note that the first 4 decimals coincide. The cubic root of 258277042 is about 636.8374596687.

The spelling of 258277042 in words is "two hundred fifty-eight million, two hundred seventy-seven thousand, forty-two".