117139420 has 24 divisors (see below), whose sum is σ = 247275504. Its totient is φ = 46611456.

The previous prime is 117139409. The next prime is 117139423. The reversal of 117139420 is 24931711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117139423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11314 + ... + 19033.

It is an arithmetic number, because the mean of its divisors is an integer number (10303146).

Almost surely, 2^117139420 is an apocalyptic number.

117139420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117139420 is an abundant number, since it is smaller than the sum of its proper divisors (130136084).

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

117139420 is a wasteful number, since it uses less digits than its factorization.

117139420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30549 (or 30547 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 117139420 is about 10823.0965994026. The cubic root of 117139420 is about 489.2915208940.

The spelling of 117139420 in words is "one hundred seventeen million, one hundred thirty-nine thousand, four hundred twenty".