42422339 has 2 divisors, whose sum is σ = 42422340. Its totient is φ = 42422338.

The previous prime is 42422311. The next prime is 42422351. The reversal of 42422339 is 93322424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42422339 - 2²⁰ = 41373763 is a prime.

It is not a weakly prime, because it can be changed into another prime (42427339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21211169 + 21211170.

It is an arithmetic number, because the mean of its divisors is an integer number (21211170).

Almost surely, 2^42422339 is an apocalyptic number.

42422339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42422339 is an equidigital number, since it uses as much as digits as its factorization.

42422339 is an evil number, because the sum of its binary digits is even.

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

The square root of 42422339 is about 6513.2433548886. The cubic root of 42422339 is about 348.7639090388.

The spelling of 42422339 in words is "forty-two million, four hundred twenty-two thousand, three hundred thirty-nine".