1170957421 has 2 divisors, whose sum is σ = 1170957422. Its totient is φ = 1170957420.

The previous prime is 1170957413. The next prime is 1170957493. The reversal of 1170957421 is 1247590711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635544100 + 535413321 = 25210^2 + 23139^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170957421 - 2³ = 1170957413 is a prime.

It is a super-2 number, since 2×1170957421² = 2742282563589942482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1170957721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585478710 + 585478711.

It is an arithmetic number, because the mean of its divisors is an integer number (585478711).

Almost surely, 2^1170957421 is an apocalyptic number.

It is an amenable number.

1170957421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170957421 is an equidigital number, since it uses as much as digits as its factorization.

1170957421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1170957421 is about 34219.2551204727. The cubic root of 1170957421 is about 1054.0155896070.

The spelling of 1170957421 in words is "one billion, one hundred seventy million, nine hundred fifty-seven thousand, four hundred twenty-one".