117421556 has 24 divisors (see below), whose sum is σ = 236347776. Its totient is φ = 50001120.

The previous prime is 117421547. The next prime is 117421559. The reversal of 117421556 is 655124711.

It is a super-2 number, since 2×117421556² = 27575643626922272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117421559) 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, 8960 + ... + 17751.

It is an arithmetic number, because the mean of its divisors is an integer number (9847824).

Almost surely, 2^117421556 is an apocalyptic number.

It is an amenable number.

117421556 is an abundant number, since it is smaller than the sum of its proper divisors (118926220).

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

117421556 is a wasteful number, since it uses less digits than its factorization.

117421556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26879 (or 26877 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 117421556 is about 10836.1227383230. The cubic root of 117421556 is about 489.6840334226.

The spelling of 117421556 in words is "one hundred seventeen million, four hundred twenty-one thousand, five hundred fifty-six".