117777142 has 32 divisors (see below), whose sum is σ = 208373760. Its totient is φ = 48872160.

The previous prime is 117777103. The next prime is 117777151. The reversal of 117777142 is 241777711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139959 + ... + 140797.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^117777142 is an apocalyptic number.

117777142 is a deficient number, since it is larger than the sum of its proper divisors (90596618).

117777142 is a wasteful number, since it uses less digits than its factorization.

117777142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 19208, while the sum is 37.

The square root of 117777142 is about 10852.5177723881. The cubic root of 117777142 is about 490.1778363245.

The spelling of 117777142 in words is "one hundred seventeen million, seven hundred seventy-seven thousand, one hundred forty-two".