1390221124 has 6 divisors (see below), whose sum is σ = 2432886974. Its totient is φ = 695110560.

The previous prime is 1390221083. The next prime is 1390221163. The reversal of 1390221124 is 4211220931.

It can be written as a sum of positive squares in only one way, i.e., 1081094400 + 309126724 = 32880^2 + 17582^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173777637 + ... + 173777644.

Almost surely, 2^1390221124 is an apocalyptic number.

It is an amenable number.

1390221124 is a deficient number, since it is larger than the sum of its proper divisors (1042665850).

1390221124 is a wasteful number, since it uses less digits than its factorization.

1390221124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347555285 (or 347555283 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1390221124 is about 37285.6691504927. The cubic root of 1390221124 is about 1116.0782063015.

The spelling of 1390221124 in words is "one billion, three hundred ninety million, two hundred twenty-one thousand, one hundred twenty-four".