42464239 has 2 divisors, whose sum is σ = 42464240. Its totient is φ = 42464238.

The previous prime is 42464231. The next prime is 42464267. The reversal of 42464239 is 93246424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42464239 - 2³ = 42464231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42464231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21232119 + 21232120.

It is an arithmetic number, because the mean of its divisors is an integer number (21232120).

Almost surely, 2^42464239 is an apocalyptic number.

42464239 is a deficient number, since it is larger than the sum of its proper divisors (1).

42464239 is an equidigital number, since it uses as much as digits as its factorization.

42464239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The square root of 42464239 is about 6516.4590845029. The cubic root of 42464239 is about 348.8786944692.

The spelling of 42464239 in words is "forty-two million, four hundred sixty-four thousand, two hundred thirty-nine".