1171442057 has 2 divisors, whose sum is σ = 1171442058. Its totient is φ = 1171442056.

The previous prime is 1171442011. The next prime is 1171442143. The reversal of 1171442057 is 7502441711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019141776 + 152300281 = 31924^2 + 12341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171442057 - 2²⁶ = 1104333193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1171442357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585721028 + 585721029.

It is an arithmetic number, because the mean of its divisors is an integer number (585721029).

Almost surely, 2^1171442057 is an apocalyptic number.

It is an amenable number.

1171442057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171442057 is an equidigital number, since it uses as much as digits as its factorization.

1171442057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 1171442057 is about 34226.3357226566. The cubic root of 1171442057 is about 1054.1609815841.

Adding to 1171442057 its reverse (7502441711), we get a palindrome (8673883768).

The spelling of 1171442057 in words is "one billion, one hundred seventy-one million, four hundred forty-two thousand, fifty-seven".