117421056 has 176 divisors, whose sum is σ = 361582080. Its totient is φ = 37601280.

The previous prime is 117421039. The next prime is 117421061. The reversal of 117421056 is 650124711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857020 + ... + 857156.

Almost surely, 2^117421056 is an apocalyptic number.

117421056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117421056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180791040).

117421056 is an abundant number, since it is smaller than the sum of its proper divisors (244161024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117421056 is a wasteful number, since it uses less digits than its factorization.

117421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 117421056 is about 10836.0996673157. The cubic root of 117421056 is about 489.6833383703.

Adding to 117421056 its reverse (650124711), we get a palindrome (767545767).

The spelling of 117421056 in words is "one hundred seventeen million, four hundred twenty-one thousand, fifty-six".