239342420 has 48 divisors (see below), whose sum is σ = 522256896. Its totient is φ = 92064000.

The previous prime is 239342407. The next prime is 239342431. The reversal of 239342420 is 24243932.

It is a super-2 number, since 2×239342420² = 114569588022912800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 56165 + ... + 60275.

It is an arithmetic number, because the mean of its divisors is an integer number (10880352).

Almost surely, 2^239342420 is an apocalyptic number.

239342420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239342420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261128448).

239342420 is an abundant number, since it is smaller than the sum of its proper divisors (282914476).

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

239342420 is a wasteful number, since it uses less digits than its factorization.

239342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 239342420 is about 15470.6955241191. The cubic root of 239342420 is about 620.8784114929.

The spelling of 239342420 in words is "two hundred thirty-nine million, three hundred forty-two thousand, four hundred twenty".