1213140572 has 24 divisors (see below), whose sum is σ = 2459522016. Its totient is φ = 512794368.

The previous prime is 1213140569. The next prime is 1213140581. The reversal of 1213140572 is 2750413121.

It is a congruent 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, 294713 + ... + 298800.

It is an arithmetic number, because the mean of its divisors is an integer number (102480084).

Almost surely, 2^1213140572 is an apocalyptic number.

It is an amenable number.

1213140572 is an abundant number, since it is smaller than the sum of its proper divisors (1246381444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213140572 is a wasteful number, since it uses less digits than its factorization.

1213140572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593597 (or 593595 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1213140572 is about 34830.1675563010. The cubic root of 1213140572 is about 1066.5233688142.

Adding to 1213140572 its reverse (2750413121), we get a palindrome (3963553693).

The spelling of 1213140572 in words is "one billion, two hundred thirteen million, one hundred forty thousand, five hundred seventy-two".