42242239 has 16 divisors (see below), whose sum is σ = 46483360. Its totient is φ = 38154240.

The previous prime is 42242173. The next prime is 42242251. The reversal of 42242239 is 93224224.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42242239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175159 + ... + 175399.

It is an arithmetic number, because the mean of its divisors is an integer number (2905210).

Almost surely, 2^42242239 is an apocalyptic number.

42242239 is a deficient number, since it is larger than the sum of its proper divisors (4241121).

42242239 is a wasteful number, since it uses less digits than its factorization.

42242239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 6912, while the sum is 28.

The square root of 42242239 is about 6499.4029725814. The cubic root of 42242239 is about 348.2696609630.

The spelling of 42242239 in words is "forty-two million, two hundred forty-two thousand, two hundred thirty-nine".