1252156634 has 8 divisors (see below), whose sum is σ = 1879482528. Its totient is φ = 625662460.

The previous prime is 1252156613. The next prime is 1252156637. The reversal of 1252156634 is 4366512521.

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 = 1252156594 and 1252156603.

It is not an unprimeable number, because it can be changed into a prime (1252156637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204152 + ... + 210195.

It is an arithmetic number, because the mean of its divisors is an integer number (234935316).

Almost surely, 2^1252156634 is an apocalyptic number.

1252156634 is a deficient number, since it is larger than the sum of its proper divisors (627325894).

1252156634 is a wasteful number, since it uses less digits than its factorization.

1252156634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415860.

The product of its digits is 43200, while the sum is 35.

The square root of 1252156634 is about 35385.8253259692. The cubic root of 1252156634 is about 1077.8364993556.

The spelling of 1252156634 in words is "one billion, two hundred fifty-two million, one hundred fifty-six thousand, six hundred thirty-four".