120117457 has 2 divisors, whose sum is σ = 120117458. Its totient is φ = 120117456.

The previous prime is 120117433. The next prime is 120117463. The reversal of 120117457 is 754711021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120033936 + 83521 = 10956^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 120117457 - 2²³ = 111728849 is a prime.

It is a super-2 number, since 2×120117457² = 28856406952293698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120117407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60058728 + 60058729.

It is an arithmetic number, because the mean of its divisors is an integer number (60058729).

Almost surely, 2^120117457 is an apocalyptic number.

It is an amenable number.

120117457 is a deficient number, since it is larger than the sum of its proper divisors (1).

120117457 is an equidigital number, since it uses as much as digits as its factorization.

120117457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 120117457 is about 10959.8109928958. The cubic root of 120117457 is about 493.4032923168.

Adding to 120117457 its reverse (754711021), we get a palindrome (874828478).

The spelling of 120117457 in words is "one hundred twenty million, one hundred seventeen thousand, four hundred fifty-seven".