118921297 has 4 divisors (see below), whose sum is σ = 129732336. Its totient is φ = 108110260.

The previous prime is 118921291. The next prime is 118921331. The reversal of 118921297 is 792129811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118921297 - 2⁷ = 118921169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118921291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405503 + ... + 5405524.

It is an arithmetic number, because the mean of its divisors is an integer number (32433084).

Almost surely, 2^118921297 is an apocalyptic number.

It is an amenable number.

118921297 is a deficient number, since it is larger than the sum of its proper divisors (10811039).

118921297 is a wasteful number, since it uses less digits than its factorization.

118921297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811038.

The product of its digits is 18144, while the sum is 40.

The square root of 118921297 is about 10905.1041719004. The cubic root of 118921297 is about 491.7600138890.

The spelling of 118921297 in words is "one hundred eighteen million, nine hundred twenty-one thousand, two hundred ninety-seven".