1240064992 has 12 divisors (see below), whose sum is σ = 2441378016. Its totient is φ = 620032480.

The previous prime is 1240064989. The next prime is 1240065023. The reversal of 1240064992 is 2994600421.

It is a happy number.

It is a super-2 number, since 2×1240064992² = 3075522368767920128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19375984 + ... + 19376047.

It is an arithmetic number, because the mean of its divisors is an integer number (203448168).

Almost surely, 2^1240064992 is an apocalyptic number.

It is an amenable number.

1240064992 is a deficient number, since it is larger than the sum of its proper divisors (1201313024).

1240064992 is an equidigital number, since it uses as much as digits as its factorization.

1240064992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38752041 (or 38752033 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1240064992 is about 35214.5565356146. The cubic root of 1240064992 is about 1074.3558403694.

The spelling of 1240064992 in words is "one billion, two hundred forty million, sixty-four thousand, nine hundred ninety-two".