117142135 has 16 divisors (see below), whose sum is σ = 153563040. Its totient is φ = 85075840.

The previous prime is 117142093. The next prime is 117142139. The reversal of 117142135 is 531241711.

It is not a de Polignac number, because 117142135 - 2⁹ = 117141623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117142139) 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 15 ways as a sum of consecutive naturals, for example, 66729 + ... + 68461.

It is an arithmetic number, because the mean of its divisors is an integer number (9597690).

Almost surely, 2^117142135 is an apocalyptic number.

117142135 is a deficient number, since it is larger than the sum of its proper divisors (36420905).

117142135 is a wasteful number, since it uses less digits than its factorization.

117142135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978.

The product of its digits is 840, while the sum is 25.

The square root of 117142135 is about 10823.2220248870. Note that the first 3 decimals coincide. The cubic root of 117142135 is about 489.2953010510.

Adding to 117142135 its reverse (531241711), we get a palindrome (648383846).

The spelling of 117142135 in words is "one hundred seventeen million, one hundred forty-two thousand, one hundred thirty-five".