1213130642 has 16 divisors (see below), whose sum is σ = 1927709280. Its totient is φ = 570596928.

The previous prime is 1213130627. The next prime is 1213130713. The reversal of 1213130642 is 2460313121.

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, 69209 + ... + 84947.

It is an arithmetic number, because the mean of its divisors is an integer number (120481830).

Almost surely, 2^1213130642 is an apocalyptic number.

1213130642 is a deficient number, since it is larger than the sum of its proper divisors (714578638).

1213130642 is a wasteful number, since it uses less digits than its factorization.

1213130642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18025.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1213130642 is about 34830.0250071687. The cubic root of 1213130642 is about 1066.5204588448.

Adding to 1213130642 its reverse (2460313121), we get a palindrome (3673443763).

The spelling of 1213130642 in words is "one billion, two hundred thirteen million, one hundred thirty thousand, six hundred forty-two".