117776421 has 48 divisors (see below), whose sum is σ = 208141440. Its totient is φ = 62674560.

The previous prime is 117776411. The next prime is 117776429. The reversal of 117776421 is 124677711.

117776421 is a `hidden beast` number, since 1 + 1 + 7 + 7 + 7 + 642 + 1 = 666.

It is not a de Polignac number, because 117776421 - 2⁵ = 117776389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117776429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72211 + ... + 73823.

It is an arithmetic number, because the mean of its divisors is an integer number (4336280).

Almost surely, 2^117776421 is an apocalyptic number.

It is an amenable number.

117776421 is a deficient number, since it is larger than the sum of its proper divisors (90365019).

117776421 is a wasteful number, since it uses less digits than its factorization.

117776421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1703 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 117776421 is about 10852.4845542392. The cubic root of 117776421 is about 490.1768360768.

The spelling of 117776421 in words is "one hundred seventeen million, seven hundred seventy-six thousand, four hundred twenty-one".