118741721 has 8 divisors (see below), whose sum is σ = 135815040. Its totient is φ = 101695968.

The previous prime is 118741717. The next prime is 118741729. The reversal of 118741721 is 127147811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118741721 - 2² = 118741717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118741729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365 + ... + 15773.

It is an arithmetic number, because the mean of its divisors is an integer number (16976880).

Almost surely, 2^118741721 is an apocalyptic number.

It is an amenable number.

118741721 is a deficient number, since it is larger than the sum of its proper divisors (17073319).

118741721 is a wasteful number, since it uses less digits than its factorization.

118741721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13783.

The product of its digits is 3136, while the sum is 32.

The square root of 118741721 is about 10896.8674856584. The cubic root of 118741721 is about 491.5123633125.

The spelling of 118741721 in words is "one hundred eighteen million, seven hundred forty-one thousand, seven hundred twenty-one".