118672921 has 2 divisors, whose sum is σ = 118672922. Its totient is φ = 118672920.

The previous prime is 118672889. The next prime is 118672963. The reversal of 118672921 is 129276811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 22848400 = 9789^2 + 4780^2 .

It is a cyclic number.

It is not a de Polignac number, because 118672921 - 2⁵ = 118672889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118672621) 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, 59336460 + 59336461.

It is an arithmetic number, because the mean of its divisors is an integer number (59336461).

Almost surely, 2^118672921 is an apocalyptic number.

It is an amenable number.

118672921 is a deficient number, since it is larger than the sum of its proper divisors (1).

118672921 is an equidigital number, since it uses as much as digits as its factorization.

118672921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 118672921 is about 10893.7101577011. The cubic root of 118672921 is about 491.4174161068.

The spelling of 118672921 in words is "one hundred eighteen million, six hundred seventy-two thousand, nine hundred twenty-one".