117820424 has 8 divisors (see below), whose sum is σ = 220913310. Its totient is φ = 58910208.

The previous prime is 117820403. The next prime is 117820427. The reversal of 117820424 is 424028711.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 964324 = 10810^2 + 982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (117820427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7363769 + ... + 7363784.

Almost surely, 2^117820424 is an apocalyptic number.

It is an amenable number.

117820424 is a deficient number, since it is larger than the sum of its proper divisors (103092886).

117820424 is a wasteful number, since it uses less digits than its factorization.

117820424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14727559 (or 14727555 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 117820424 is about 10854.5116886942. The cubic root of 117820424 is about 490.2378742300.

The spelling of 117820424 in words is "one hundred seventeen million, eight hundred twenty thousand, four hundred twenty-four".