252251231642 has 16 divisors (see below), whose sum is σ = 397709980992. Its totient is φ = 119761292640.

The previous prime is 252251231629. The next prime is 252251231689. The reversal of 252251231642 is 246132152252.

It is a happy number.

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, 20007284 + ... + 20019887.

It is an arithmetic number, because the mean of its divisors is an integer number (24856873812).

Almost surely, 2^252251231642 is an apocalyptic number.

252251231642 is a deficient number, since it is larger than the sum of its proper divisors (145458749350).

252251231642 is a wasteful number, since it uses less digits than its factorization.

252251231642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40027333.

The product of its digits is 57600, while the sum is 35.

Adding to 252251231642 its reverse (246132152252), we get a palindrome (498383383894).

The spelling of 252251231642 in words is "two hundred fifty-two billion, two hundred fifty-one million, two hundred thirty-one thousand, six hundred forty-two".