1402121969 has 2 divisors, whose sum is σ = 1402121970. Its totient is φ = 1402121968.

The previous prime is 1402121947. The next prime is 1402122031. The reversal of 1402121969 is 9691212041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713584369 + 688537600 = 26713^2 + 26240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402121969 - 2⁸ = 1402121713 is a prime.

It is a super-2 number, since 2×1402121969² = 3931892031904873922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1402121269) by changing a digit.

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, 701060984 + 701060985.

It is an arithmetic number, because the mean of its divisors is an integer number (701060985).

Almost surely, 2^1402121969 is an apocalyptic number.

It is an amenable number.

1402121969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402121969 is an equidigital number, since it uses as much as digits as its factorization.

1402121969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1402121969 is about 37444.9191346436. The cubic root of 1402121969 is about 1119.2538527805.

The spelling of 1402121969 in words is "one billion, four hundred two million, one hundred twenty-one thousand, nine hundred sixty-nine".