42423559 has 2 divisors, whose sum is σ = 42423560. Its totient is φ = 42423558.

The previous prime is 42423539. The next prime is 42423611. The reversal of 42423559 is 95532424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42423559 - 2⁵ = 42423527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42423509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21211779 + 21211780.

It is an arithmetic number, because the mean of its divisors is an integer number (21211780).

Almost surely, 2^42423559 is an apocalyptic number.

42423559 is a deficient number, since it is larger than the sum of its proper divisors (1).

42423559 is an equidigital number, since it uses as much as digits as its factorization.

42423559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 42423559 is about 6513.3370095520. The cubic root of 42423559 is about 348.7672523079.

The spelling of 42423559 in words is "forty-two million, four hundred twenty-three thousand, five hundred fifty-nine".