42420339 has 24 divisors (see below), whose sum is σ = 66258192. Its totient is φ = 25997760.

The previous prime is 42420311. The next prime is 42420377. The reversal of 42420339 is 93302424.

It is a happy number.

42420339 is a `hidden beast` number, since 424 + 203 + 39 = 666.

It is not a de Polignac number, because 42420339 - 2¹¹ = 42418291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42420379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35329 + ... + 36509.

It is an arithmetic number, because the mean of its divisors is an integer number (2760758).

Almost surely, 2^42420339 is an apocalyptic number.

42420339 is a deficient number, since it is larger than the sum of its proper divisors (23837853).

42420339 is a wasteful number, since it uses less digits than its factorization.

42420339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 42420339 is about 6513.0898197399. The cubic root of 42420339 is about 348.7584281310.

The spelling of 42420339 in words is "forty-two million, four hundred twenty thousand, three hundred thirty-nine".