42394254319 has 2 divisors, whose sum is σ = 42394254320. Its totient is φ = 42394254318.

The previous prime is 42394254311. The next prime is 42394254341. The reversal of 42394254319 is 91345249324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42394254319 - 2³ = 42394254311 is a prime.

It is a super-2 number, since 2×42394254319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42394254311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21197127159 + 21197127160.

It is an arithmetic number, because the mean of its divisors is an integer number (21197127160).

Almost surely, 2^42394254319 is an apocalyptic number.

42394254319 is a deficient number, since it is larger than the sum of its proper divisors (1).

42394254319 is an equidigital number, since it uses as much as digits as its factorization.

42394254319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 46.

The spelling of 42394254319 in words is "forty-two billion, three hundred ninety-four million, two hundred fifty-four thousand, three hundred nineteen".