117191442 has 16 divisors (see below), whose sum is σ = 237881952. Its totient is φ = 38480640.

The previous prime is 117191441. The next prime is 117191453. The reversal of 117191442 is 244191711.

It is not an unprimeable number, because it can be changed into a prime (117191441) 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, 145359 + ... + 146162.

It is an arithmetic number, because the mean of its divisors is an integer number (14867622).

Almost surely, 2^117191442 is an apocalyptic number.

117191442 is an abundant number, since it is smaller than the sum of its proper divisors (120690510).

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

117191442 is a wasteful number, since it uses less digits than its factorization.

117191442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291593.

The product of its digits is 2016, while the sum is 30.

The square root of 117191442 is about 10825.4996189552. The cubic root of 117191442 is about 489.3639421631.

The spelling of 117191442 in words is "one hundred seventeen million, one hundred ninety-one thousand, four hundred forty-two".