118057921 has 2 divisors, whose sum is σ = 118057922. Its totient is φ = 118057920.

The previous prime is 118057909. The next prime is 118057931. The reversal of 118057921 is 129750811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92160000 + 25897921 = 9600^2 + 5089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118057921 is a prime.

It is equal to p_6737362 and since 118057921 and 6737362 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (118057931) 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, 59028960 + 59028961.

It is an arithmetic number, because the mean of its divisors is an integer number (59028961).

Almost surely, 2^118057921 is an apocalyptic number.

It is an amenable number.

118057921 is a deficient number, since it is larger than the sum of its proper divisors (1).

118057921 is an equidigital number, since it uses as much as digits as its factorization.

118057921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 118057921 is about 10865.4461942435. The cubic root of 118057921 is about 490.5670528124.

The spelling of 118057921 in words is "one hundred eighteen million, fifty-seven thousand, nine hundred twenty-one".