187420 has 12 divisors (see below), whose sum is σ = 393624. Its totient is φ = 74960.

The previous prime is 187417. The next prime is 187423. The reversal of 187420 is 24781.

187420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (187417) and next prime (187423).

It is a junction number, because it is equal to n+sod(n) for n = 187391 and 187400.

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, 4666 + ... + 4705.

It is an arithmetic number, because the mean of its divisors is an integer number (32802).

2¹⁸⁷⁴²⁰ is an apocalyptic number.

187420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187420 is an abundant number, since it is smaller than the sum of its proper divisors (206204).

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

187420 is a wasteful number, since it uses less digits than its factorization.

187420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9380 (or 9378 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 187420 is about 432.9203159936. The cubic root of 187420 is about 57.2275707795.

The spelling of 187420 in words is "one hundred eighty-seven thousand, four hundred twenty".