117421994 has 16 divisors (see below), whose sum is σ = 179542440. Its totient is φ = 57585600.

The previous prime is 117421987. The next prime is 117421999. The reversal of 117421994 is 499124711.

It can be written as a sum of positive squares in 4 ways, for example, as 102313225 + 15108769 = 10115^2 + 3887^2 .

It is not an unprimeable number, because it can be changed into a prime (117421999) 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, 19352 + ... + 24684.

Almost surely, 2^117421994 is an apocalyptic number.

117421994 is a deficient number, since it is larger than the sum of its proper divisors (62120446).

117421994 is a wasteful number, since it uses less digits than its factorization.

117421994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545.

The product of its digits is 18144, while the sum is 38.

The square root of 117421994 is about 10836.1429484849. The cubic root of 117421994 is about 489.6846422868.

The spelling of 117421994 in words is "one hundred seventeen million, four hundred twenty-one thousand, nine hundred ninety-four".