252715210442 has 4 divisors (see below), whose sum is σ = 379072815666. Its totient is φ = 126357605220.

The previous prime is 252715210441. The next prime is 252715210457. The reversal of 252715210442 is 244012517252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 204377230561 + 48337979881 = 452081^2 + 219859^2 .

It is not an unprimeable number, because it can be changed into a prime (252715210441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63178802609 + ... + 63178802612.

Almost surely, 2^252715210442 is an apocalyptic number.

252715210442 is a deficient number, since it is larger than the sum of its proper divisors (126357605224).

252715210442 is a wasteful number, since it uses less digits than its factorization.

252715210442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126357605223.

The product of its (nonzero) digits is 44800, while the sum is 35.

Adding to 252715210442 its reverse (244012517252), we get a palindrome (496727727694).

The spelling of 252715210442 in words is "two hundred fifty-two billion, seven hundred fifteen million, two hundred ten thousand, four hundred forty-two".