117121457 has 2 divisors, whose sum is σ = 117121458. Its totient is φ = 117121456.

The previous prime is 117121399. The next prime is 117121469. The reversal of 117121457 is 754121711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105349696 + 11771761 = 10264^2 + 3431^2 .

It is a cyclic number.

It is not a de Polignac number, because 117121457 - 2⁶ = 117121393 is a prime.

It is not a weakly prime, because it can be changed into another prime (117121057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58560728 + 58560729.

It is an arithmetic number, because the mean of its divisors is an integer number (58560729).

Almost surely, 2^117121457 is an apocalyptic number.

It is an amenable number.

117121457 is a deficient number, since it is larger than the sum of its proper divisors (1).

117121457 is an equidigital number, since it uses as much as digits as its factorization.

117121457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 29.

The square root of 117121457 is about 10822.2667219026. The cubic root of 117121457 is about 489.2665091234.

The spelling of 117121457 in words is "one hundred seventeen million, one hundred twenty-one thousand, four hundred fifty-seven".