117087021 has 24 divisors (see below), whose sum is σ = 175383936. Its totient is φ = 75216960.

The previous prime is 117086971. The next prime is 117087049. The reversal of 117087021 is 120780711.

It is not a de Polignac number, because 117087021 - 2⁹ = 117086509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117087071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28716 + ... + 32538.

It is an arithmetic number, because the mean of its divisors is an integer number (7307664).

Almost surely, 2^117087021 is an apocalyptic number.

It is an amenable number.

117087021 is a deficient number, since it is larger than the sum of its proper divisors (58296915).

117087021 is a wasteful number, since it uses less digits than its factorization.

117087021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 117087021 is about 10820.6756258563. The cubic root of 117087021 is about 489.2185531141.

The spelling of 117087021 in words is "one hundred seventeen million, eighty-seven thousand, twenty-one".