1240920992 has 12 divisors (see below), whose sum is σ = 2443063266. Its totient is φ = 620460480.

The previous prime is 1240920907. The next prime is 1240921013. The reversal of 1240920992 is 2990290421.

It can be written as a sum of positive squares in only one way, i.e., 1109955856 + 130965136 = 33316^2 + 11444^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19389359 + ... + 19389422.

Almost surely, 2^1240920992 is an apocalyptic number.

It is an amenable number.

1240920992 is a deficient number, since it is larger than the sum of its proper divisors (1202142274).

1240920992 is an equidigital number, since it uses as much as digits as its factorization.

1240920992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38778791 (or 38778783 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1240920992 is about 35226.7085036340. The cubic root of 1240920992 is about 1074.6029879193.

The spelling of 1240920992 in words is "one billion, two hundred forty million, nine hundred twenty thousand, nine hundred ninety-two".