42523522939 has 2 divisors, whose sum is σ = 42523522940. Its totient is φ = 42523522938.

The previous prime is 42523522919. The next prime is 42523523011. The reversal of 42523522939 is 93922532524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42523522939 - 2⁹ = 42523522427 is a prime.

It is not a weakly prime, because it can be changed into another prime (42523522919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21261761469 + 21261761470.

It is an arithmetic number, because the mean of its divisors is an integer number (21261761470).

Almost surely, 2^42523522939 is an apocalyptic number.

42523522939 is a deficient number, since it is larger than the sum of its proper divisors (1).

42523522939 is an equidigital number, since it uses as much as digits as its factorization.

42523522939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 46.

The spelling of 42523522939 in words is "forty-two billion, five hundred twenty-three million, five hundred twenty-two thousand, nine hundred thirty-nine".