118689642 has 24 divisors (see below), whose sum is σ = 257774400. Its totient is φ = 39468840.

The previous prime is 118689619. The next prime is 118689647. The reversal of 118689642 is 246986811.

It is a super-2 number, since 2×118689642² = 28174462236176328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118689647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109 + ... + 15407.

It is an arithmetic number, because the mean of its divisors is an integer number (10740600).

Almost surely, 2^118689642 is an apocalyptic number.

118689642 is an abundant number, since it is smaller than the sum of its proper divisors (139084758).

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

118689642 is a wasteful number, since it uses less digits than its factorization.

118689642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15738 (or 15735 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 118689642 is about 10894.4775918811. The cubic root of 118689642 is about 491.4404952408.

The spelling of 118689642 in words is "one hundred eighteen million, six hundred eighty-nine thousand, six hundred forty-two".