187942 has 4 divisors (see below), whose sum is σ = 281916. Its totient is φ = 93970.

The previous prime is 187931. The next prime is 187951. The reversal of 187942 is 249781.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46984 + ... + 46987.

It is an arithmetic number, because the mean of its divisors is an integer number (70479).

2¹⁸⁷⁹⁴² is an apocalyptic number.

187942 is a deficient number, since it is larger than the sum of its proper divisors (93974).

187942 is an equidigital number, since it uses as much as digits as its factorization.

187942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93973.

The product of its digits is 4032, while the sum is 31.

The square root of 187942 is about 433.5227791016. The cubic root of 187942 is about 57.2806513846.

The spelling of 187942 in words is "one hundred eighty-seven thousand, nine hundred forty-two".