215022042 has 48 divisors (see below), whose sum is σ = 477360000. Its totient is φ = 69930432.

The previous prime is 215022029. The next prime is 215022077. The reversal of 215022042 is 240220512.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125709 + ... + 127407.

It is an arithmetic number, because the mean of its divisors is an integer number (9945000).

Almost surely, 2^215022042 is an apocalyptic number.

215022042 is an abundant number, since it is smaller than the sum of its proper divisors (262337958).

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

215022042 is a wasteful number, since it uses less digits than its factorization.

215022042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 215022042 is about 14663.6299053133. The cubic root of 215022042 is about 599.0931132848.

Adding to 215022042 its reverse (240220512), we get a palindrome (455242554).

The spelling of 215022042 in words is "two hundred fifteen million, twenty-two thousand, forty-two".