42042599 has 2 divisors, whose sum is σ = 42042600. Its totient is φ = 42042598.

The previous prime is 42042587. The next prime is 42042601. The reversal of 42042599 is 99524024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42042599 is a prime.

Together with 42042601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42042509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021299 + 21021300.

It is an arithmetic number, because the mean of its divisors is an integer number (21021300).

Almost surely, 2^42042599 is an apocalyptic number.

42042599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042599 is an equidigital number, since it uses as much as digits as its factorization.

42042599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 42042599 is about 6484.0264496684. The cubic root of 42042599 is about 347.7201448258.

The spelling of 42042599 in words is "forty-two million, forty-two thousand, five hundred ninety-nine".