252215142 has 32 divisors (see below), whose sum is σ = 514252800. Its totient is φ = 82450368.

The previous prime is 252215141. The next prime is 252215189. The reversal of 252215142 is 241512252.

It is a super-2 number, since 2×252215142² = 127224955708160328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252215141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65959 + ... + 69677.

It is an arithmetic number, because the mean of its divisors is an integer number (16070400).

Almost surely, 2^252215142 is an apocalyptic number.

252215142 is an abundant number, since it is smaller than the sum of its proper divisors (262037658).

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

252215142 is a wasteful number, since it uses less digits than its factorization.

252215142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940.

The product of its digits is 1600, while the sum is 24.

The square root of 252215142 is about 15881.2827567549. The cubic root of 252215142 is about 631.8156591970.

Adding to 252215142 its reverse (241512252), we get a palindrome (493727394).

The spelling of 252215142 in words is "two hundred fifty-two million, two hundred fifteen thousand, one hundred forty-two".