249215122 has 8 divisors (see below), whose sum is σ = 402578316. Its totient is φ = 115022352.

The previous prime is 249215119. The next prime is 249215173. The reversal of 249215122 is 221512942.

It can be written as a sum of positive squares in 2 ways, for example, as 240281001 + 8934121 = 15501^2 + 2989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4792573 + ... + 4792624.

Almost surely, 2^249215122 is an apocalyptic number.

249215122 is a deficient number, since it is larger than the sum of its proper divisors (153363194).

249215122 is a wasteful number, since it uses less digits than its factorization.

249215122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9585212.

The product of its digits is 2880, while the sum is 28.

The square root of 249215122 is about 15786.5487678593. The cubic root of 249215122 is about 629.3005776181.

The spelling of 249215122 in words is "two hundred forty-nine million, two hundred fifteen thousand, one hundred twenty-two".