42242953723 has 2 divisors, whose sum is σ = 42242953724. Its totient is φ = 42242953722.

The previous prime is 42242953717. The next prime is 42242953769. The reversal of 42242953723 is 32735924224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42242953723 - 2⁵ = 42242953691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42242953723.

It is not a weakly prime, because it can be changed into another prime (42242950723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121476861 + 21121476862.

It is an arithmetic number, because the mean of its divisors is an integer number (21121476862).

Almost surely, 2^42242953723 is an apocalyptic number.

42242953723 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242953723 is an equidigital number, since it uses as much as digits as its factorization.

42242953723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 43.

The spelling of 42242953723 in words is "forty-two billion, two hundred forty-two million, nine hundred fifty-three thousand, seven hundred twenty-three".