118127521 has 4 divisors (see below), whose sum is σ = 118152112. Its totient is φ = 118102932.

The previous prime is 118127501. The next prime is 118127531. The reversal of 118127521 is 125721811.

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 118127521 - 2⁵ = 118127489 is a prime.

It is a super-2 number, since 2×118127521² = 27908222435210882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118127521.

It is not an unprimeable number, because it can be changed into a prime (118127501) 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, 2475 + ... + 15568.

It is an arithmetic number, because the mean of its divisors is an integer number (29538028).

Almost surely, 2^118127521 is an apocalyptic number.

It is an amenable number.

118127521 is a deficient number, since it is larger than the sum of its proper divisors (24591).

118127521 is an equidigital number, since it uses as much as digits as its factorization.

118127521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24590.

The product of its digits is 1120, while the sum is 28.

The square root of 118127521 is about 10868.6485360416. The cubic root of 118127521 is about 490.6634370254.

The spelling of 118127521 in words is "one hundred eighteen million, one hundred twenty-seven thousand, five hundred twenty-one".