216425442 has 16 divisors (see below), whose sum is σ = 435609792. Its totient is φ = 71682000.

The previous prime is 216425437. The next prime is 216425467. The reversal of 216425442 is 244524612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113934 + ... + 115817.

It is an arithmetic number, because the mean of its divisors is an integer number (27225612).

Almost surely, 2^216425442 is an apocalyptic number.

216425442 is an abundant number, since it is smaller than the sum of its proper divisors (219184350).

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

216425442 is a wasteful number, since it uses less digits than its factorization.

216425442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229913.

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

The square root of 216425442 is about 14711.4051674203. The cubic root of 216425442 is about 600.3936694286.

The spelling of 216425442 in words is "two hundred sixteen million, four hundred twenty-five thousand, four hundred forty-two".