187422 has 8 divisors (see below), whose sum is σ = 374856. Its totient is φ = 62472.

The previous prime is 187417. The next prime is 187423. The reversal of 187422 is 224781.

It is a sphenic number, since it is the product of 3 distinct primes.

187422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 187392 and 187401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15613 + ... + 15624.

It is an arithmetic number, because the mean of its divisors is an integer number (46857).

2¹⁸⁷⁴²² is an apocalyptic number.

187422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

187422 is a wasteful number, since it uses less digits than its factorization.

187422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31242.

The product of its digits is 896, while the sum is 24.

The square root of 187422 is about 432.9226258813. The cubic root of 187422 is about 57.2277743414.

The spelling of 187422 in words is "one hundred eighty-seven thousand, four hundred twenty-two".