1392700121 has 2 divisors, whose sum is σ = 1392700122. Its totient is φ = 1392700120.

The previous prime is 1392700109. The next prime is 1392700157. The reversal of 1392700121 is 1210072931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1305015625 + 87684496 = 36125^2 + 9364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392700121 is a prime.

It is a super-2 number, since 2×1392700121² = 3879227254066829282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1392700181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696350060 + 696350061.

It is an arithmetic number, because the mean of its divisors is an integer number (696350061).

Almost surely, 2^1392700121 is an apocalyptic number.

It is an amenable number.

1392700121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392700121 is an equidigital number, since it uses as much as digits as its factorization.

1392700121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1392700121 is about 37318.8976391318. The cubic root of 1392700121 is about 1116.7411971442.

The spelling of 1392700121 in words is "one billion, three hundred ninety-two million, seven hundred thousand, one hundred twenty-one".