42204239 has 12 divisors (see below), whose sum is σ = 53558568. Its totient is φ = 32886000.

The previous prime is 42204229. The next prime is 42204247. The reversal of 42204239 is 93240224.

It is not a de Polignac number, because 42204239 - 2⁴ = 42204223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38612 + ... + 39689.

It is an arithmetic number, because the mean of its divisors is an integer number (4463214).

Almost surely, 2^42204239 is an apocalyptic number.

42204239 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42204239 is a deficient number, since it is larger than the sum of its proper divisors (11354329).

42204239 is a wasteful number, since it uses less digits than its factorization.

42204239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78326 (or 78319 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42204239 is about 6496.4789694110. The cubic root of 42204239 is about 348.1651982435.

The spelling of 42204239 in words is "forty-two million, two hundred four thousand, two hundred thirty-nine".