117945140 has 24 divisors (see below), whose sum is σ = 252360360. Its totient is φ = 46287488.

The previous prime is 117945131. The next prime is 117945143. The reversal of 117945140 is 41549711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9909904 + 108035236 = 3148^2 + 10394^2 .

It is a super-2 number, since 2×117945140² = 27822112099239200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117945097 and 117945106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117945143) 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, 54575 + ... + 56694.

It is an arithmetic number, because the mean of its divisors is an integer number (10515015).

Almost surely, 2^117945140 is an apocalyptic number.

117945140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117945140 is an abundant number, since it is smaller than the sum of its proper divisors (134415220).

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

117945140 is a wasteful number, since it uses less digits than its factorization.

117945140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111331 (or 111329 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 117945140 is about 10860.2550614615. The cubic root of 117945140 is about 490.4107897692.

The spelling of 117945140 in words is "one hundred seventeen million, nine hundred forty-five thousand, one hundred forty".