215104442 has 16 divisors (see below), whose sum is σ = 375001920. Its totient is φ = 90624768.

The previous prime is 215104423. The next prime is 215104457. The reversal of 215104442 is 244401512.

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, 129383 + ... + 131034.

It is an arithmetic number, because the mean of its divisors is an integer number (23437620).

Almost surely, 2^215104442 is an apocalyptic number.

215104442 is a deficient number, since it is larger than the sum of its proper divisors (159897478).

215104442 is a wasteful number, since it uses less digits than its factorization.

215104442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260485.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 215104442 is about 14666.4393088438. The cubic root of 215104442 is about 599.1696309719.

Adding to 215104442 its reverse (244401512), we get a palindrome (459505954).

It can be divided in two parts, 21510 and 4442, that added together give a palindrome (25952).

The spelling of 215104442 in words is "two hundred fifteen million, one hundred four thousand, four hundred forty-two".