42559123 has 2 divisors, whose sum is σ = 42559124. Its totient is φ = 42559122.

The previous prime is 42559093. The next prime is 42559133. The reversal of 42559123 is 32195524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42559123 - 2¹⁷ = 42428051 is a prime.

It is a super-2 number, since 2×42559123² = 3622557901058258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42559133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21279561 + 21279562.

It is an arithmetic number, because the mean of its divisors is an integer number (21279562).

Almost surely, 2^42559123 is an apocalyptic number.

42559123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42559123 is an equidigital number, since it uses as much as digits as its factorization.

42559123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 42559123 is about 6523.7353563737. The cubic root of 42559123 is about 349.1383512359.

The spelling of 42559123 in words is "forty-two million, five hundred fifty-nine thousand, one hundred twenty-three".