1217342912 has 28 divisors (see below), whose sum is σ = 2417505960. Its totient is φ = 608207616.

The previous prime is 1217342909. The next prime is 1217342923. The reversal of 1217342912 is 2192437121.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86858 + ... + 99894.

Almost surely, 2^1217342912 is an apocalyptic number.

It is an amenable number.

1217342912 is a deficient number, since it is larger than the sum of its proper divisors (1200163048).

1217342912 is a wasteful number, since it uses less digits than its factorization.

1217342912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14508 (or 14498 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1217342912 is about 34890.4415563919. The cubic root of 1217342912 is about 1067.7534347368.

The spelling of 1217342912 in words is "one billion, two hundred seventeen million, three hundred forty-two thousand, nine hundred twelve".