258542128 has 20 divisors (see below), whose sum is σ = 539458528. Its totient is φ = 119327040.

The previous prime is 258542117. The next prime is 258542173. The reversal of 258542128 is 821245852.

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, 621288 + ... + 621703.

Almost surely, 2^258542128 is an apocalyptic number.

It is an amenable number.

258542128 is an abundant number, since it is smaller than the sum of its proper divisors (280916400).

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

258542128 is a wasteful number, since it uses less digits than its factorization.

258542128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243012 (or 1243006 counting only the distinct ones).

The product of its digits is 51200, while the sum is 37.

The square root of 258542128 is about 16079.2452559192. The cubic root of 258542128 is about 637.0552606402.

The spelling of 258542128 in words is "two hundred fifty-eight million, five hundred forty-two thousand, one hundred twenty-eight".