118149121 has 2 divisors, whose sum is σ = 118149122. Its totient is φ = 118149120.

The previous prime is 118149077. The next prime is 118149173. The reversal of 118149121 is 121941811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 318096 = 10855^2 + 564^2 .

It is an emirp because it is prime and its reverse (121941811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118149121 - 2⁹ = 118148609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118149121.

It is not a weakly prime, because it can be changed into another prime (118149181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59074560 + 59074561.

It is an arithmetic number, because the mean of its divisors is an integer number (59074561).

Almost surely, 2^118149121 is an apocalyptic number.

It is an amenable number.

118149121 is a deficient number, since it is larger than the sum of its proper divisors (1).

118149121 is an equidigital number, since it uses as much as digits as its factorization.

118149121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 28.

The square root of 118149121 is about 10869.6421744232. The cubic root of 118149121 is about 490.6933416693.

The spelling of 118149121 in words is "one hundred eighteen million, one hundred forty-nine thousand, one hundred twenty-one".