253890042 has 32 divisors (see below), whose sum is σ = 587673600. Its totient is φ = 71620848.

The previous prime is 253890037. The next prime is 253890061. The reversal of 253890042 is 240098352.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 253889985 and 253890012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34942 + ... + 41577.

It is an arithmetic number, because the mean of its divisors is an integer number (18364800).

Almost surely, 2^253890042 is an apocalyptic number.

253890042 is an abundant number, since it is smaller than the sum of its proper divisors (333783558).

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

253890042 is a wasteful number, since it uses less digits than its factorization.

253890042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76610.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 253890042 is about 15933.9273878099. The cubic root of 253890042 is about 633.2111532239.

The spelling of 253890042 in words is "two hundred fifty-three million, eight hundred ninety thousand, forty-two".