252643142 has 16 divisors (see below), whose sum is σ = 387528192. Its totient is φ = 123474120.

The previous prime is 252643093. The next prime is 252643147. The reversal of 252643142 is 241346252.

252643142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252643147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108167 + ... + 110477.

It is an arithmetic number, because the mean of its divisors is an integer number (24220512).

Almost surely, 2^252643142 is an apocalyptic number.

252643142 is a deficient number, since it is larger than the sum of its proper divisors (134885050).

252643142 is a wasteful number, since it uses less digits than its factorization.

252643142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523.

The product of its digits is 11520, while the sum is 29.

The square root of 252643142 is about 15894.7520270056. The cubic root of 252643142 is about 632.1728466909.

Adding to 252643142 its reverse (241346252), we get a palindrome (493989394).

The spelling of 252643142 in words is "two hundred fifty-two million, six hundred forty-three thousand, one hundred forty-two".