187243842 has 16 divisors (see below), whose sum is σ = 377183520. Its totient is φ = 61965312.

The previous prime is 187243829. The next prime is 187243873. The reversal of 187243842 is 248342781.

187243842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 187243842.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111423 + ... + 113090.

It is an arithmetic number, because the mean of its divisors is an integer number (23573970).

Almost surely, 2^187243842 is an apocalyptic number.

187243842 is an abundant number, since it is smaller than the sum of its proper divisors (189939678).

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

187243842 is a wasteful number, since it uses less digits than its factorization.

187243842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224657.

The product of its digits is 86016, while the sum is 39.

The square root of 187243842 is about 13683.7071731311. The cubic root of 187243842 is about 572.0963556358.

The spelling of 187243842 in words is "one hundred eighty-seven million, two hundred forty-three thousand, eight hundred forty-two".