239420 has 12 divisors (see below), whose sum is σ = 502824. Its totient is φ = 95760.

The previous prime is 239417. The next prime is 239423. The reversal of 239420 is 24932.

239420 = 57² + 58² + ... + 96².

It is an interprime number because it is at equal distance from previous prime (239417) and next prime (239423).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11971 = 239420 / (2 + 3 + 9 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 239392 and 239401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5966 + ... + 6005.

It is an arithmetic number, because the mean of its divisors is an integer number (41902).

2²³⁹⁴²⁰ is an apocalyptic number.

239420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239420 is an abundant number, since it is smaller than the sum of its proper divisors (263404).

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

239420 is a wasteful number, since it uses less digits than its factorization.

239420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11980 (or 11978 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 239420 is about 489.3056304601. The cubic root of 239420 is about 62.0945487698.

The spelling of 239420 in words is "two hundred thirty-nine thousand, four hundred twenty".