1170427257 has 6 divisors (see below), whose sum is σ = 1690617162. Its totient is φ = 780284832.

The previous prime is 1170427241. The next prime is 1170427273. The reversal of 1170427257 is 7527240711.

It is an interprime number because it is at equal distance from previous prime (1170427241) and next prime (1170427273).

It can be written as a sum of positive squares in only one way, i.e., 848906496 + 321520761 = 29136^2 + 17931^2 .

It is not a de Polignac number, because 1170427257 - 2⁴ = 1170427241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1170427217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65023728 + ... + 65023745.

It is an arithmetic number, because the mean of its divisors is an integer number (281769527).

Almost surely, 2^1170427257 is an apocalyptic number.

It is an amenable number.

1170427257 is a deficient number, since it is larger than the sum of its proper divisors (520189905).

1170427257 is a wasteful number, since it uses less digits than its factorization.

1170427257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130047479 (or 130047476 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 1170427257 is about 34211.5076692039. The cubic root of 1170427257 is about 1053.8564931654.

Adding to 1170427257 its reverse (7527240711), we get a palindrome (8697667968).

The spelling of 1170427257 in words is "one billion, one hundred seventy million, four hundred twenty-seven thousand, two hundred fifty-seven".