117720424 has 16 divisors (see below), whose sum is σ = 221961600. Its totient is φ = 58530672.

The previous prime is 117720419. The next prime is 117720431. The reversal of 117720424 is 424027711.

It is a junction number, because it is equal to n+sod(n) for n = 117720392 and 117720401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39672 + ... + 42535.

It is an arithmetic number, because the mean of its divisors is an integer number (13872600).

Almost surely, 2^117720424 is an apocalyptic number.

It is an amenable number.

117720424 is a deficient number, since it is larger than the sum of its proper divisors (104241176).

117720424 is a wasteful number, since it uses less digits than its factorization.

117720424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82392 (or 82388 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 117720424 is about 10849.9043313755. The cubic root of 117720424 is about 490.0991386244.

The spelling of 117720424 in words is "one hundred seventeen million, seven hundred twenty thousand, four hundred twenty-four".