1252564142 has 8 divisors (see below), whose sum is σ = 1880145432. Its totient is φ = 625849000.

The previous prime is 1252564133. The next prime is 1252564163. The reversal of 1252564142 is 2414652521.

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

It is a junction number, because it is equal to n+sod(n) for n = 1252564099 and 1252564108.

It is a congruent number.

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, 212909 + ... + 218712.

It is an arithmetic number, because the mean of its divisors is an integer number (235018179).

Almost surely, 2^1252564142 is an apocalyptic number.

1252564142 is a deficient number, since it is larger than the sum of its proper divisors (627581290).

1252564142 is a wasteful number, since it uses less digits than its factorization.

1252564142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433074.

The product of its digits is 19200, while the sum is 32.

The square root of 1252564142 is about 35391.5829258879. The cubic root of 1252564142 is about 1077.9534121403.

It can be divided in two parts, 12525 and 64142, that added together give a palindrome (76667).

The spelling of 1252564142 in words is "one billion, two hundred fifty-two million, five hundred sixty-four thousand, one hundred forty-two".