215648142 has 16 divisors (see below), whose sum is σ = 432069120. Its totient is φ = 71753912.

The previous prime is 215648129. The next prime is 215648171. The reversal of 215648142 is 241846512.

It is a happy number.

It is a super-2 number, since 2×215648142² = 93008242296104328, which contains 22 as substring.

It is a congruent number.

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, 28542 + ... + 35297.

It is an arithmetic number, because the mean of its divisors is an integer number (27004320).

Almost surely, 2^215648142 is an apocalyptic number.

215648142 is an abundant number, since it is smaller than the sum of its proper divisors (216420978).

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

215648142 is a wasteful number, since it uses less digits than its factorization.

215648142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64407.

The product of its digits is 15360, while the sum is 33.

The square root of 215648142 is about 14684.9631255921. The cubic root of 215648142 is about 599.6740284919.

The spelling of 215648142 in words is "two hundred fifteen million, six hundred forty-eight thousand, one hundred forty-two".