117142156 has 24 divisors (see below), whose sum is σ = 208217520. Its totient is φ = 57657600.

The previous prime is 117142153. The next prime is 117142169. The reversal of 117142156 is 651241711.

It is not an unprimeable number, because it can be changed into a prime (117142153) 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, 99451 + ... + 100621.

It is an arithmetic number, because the mean of its divisors is an integer number (8675730).

Almost surely, 2^117142156 is an apocalyptic number.

It is an amenable number.

117142156 is a deficient number, since it is larger than the sum of its proper divisors (91075364).

117142156 is a wasteful number, since it uses less digits than its factorization.

117142156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1543 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 117142156 is about 10823.2229950232. Note that the first 3 decimals coincide. The cubic root of 117142156 is about 489.2953302896.

Adding to 117142156 its reverse (651241711), we get a palindrome (768383867).

It can be divided in two parts, 1171 and 42156, that multiplied together give a square (49364676 = 7026²).

The spelling of 117142156 in words is "one hundred seventeen million, one hundred forty-two thousand, one hundred fifty-six".