215142604 has 24 divisors (see below), whose sum is σ = 389386368. Its totient is φ = 103902720.

The previous prime is 215142601. The next prime is 215142611. The reversal of 215142604 is 406241512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (215142601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79644 + ... + 82300.

It is an arithmetic number, because the mean of its divisors is an integer number (16224432).

Almost surely, 2^215142604 is an apocalyptic number.

It is an amenable number.

215142604 is a deficient number, since it is larger than the sum of its proper divisors (174243764).

215142604 is a wasteful number, since it uses less digits than its factorization.

215142604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 215142604 is about 14667.7402485864. The cubic root of 215142604 is about 599.2050620694.

The spelling of 215142604 in words is "two hundred fifteen million, one hundred forty-two thousand, six hundred four".