215042120 has 32 divisors (see below), whose sum is σ = 487062720. Its totient is φ = 85444800.

The previous prime is 215042119. The next prime is 215042137. The reversal of 215042120 is 21240512.

It is a super-2 number, since 2×215042120² = 92486226748188800, which contains 22 as substring.

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, 11762 + ... + 23841.

It is an arithmetic number, because the mean of its divisors is an integer number (15220710).

Almost surely, 2^215042120 is an apocalyptic number.

215042120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215042120 is an abundant number, since it is smaller than the sum of its proper divisors (272020600).

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

215042120 is a wasteful number, since it uses less digits than its factorization.

215042120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35765 (or 35761 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 215042120 is about 14664.3145083567. The cubic root of 215042120 is about 599.1117597718. Note that the first 3 decimals are identical.

Adding to 215042120 its reverse (21240512), we get a palindrome (236282632).

The spelling of 215042120 in words is "two hundred fifteen million, forty-two thousand, one hundred twenty".