42458912491 has 2 divisors, whose sum is σ = 42458912492. Its totient is φ = 42458912490.

The previous prime is 42458912443. The next prime is 42458912497. The reversal of 42458912491 is 19421985424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42458912491 - 2²³ = 42450523883 is a prime.

It is not a weakly prime, because it can be changed into another prime (42458912497) 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, 21229456245 + 21229456246.

It is an arithmetic number, because the mean of its divisors is an integer number (21229456246).

Almost surely, 2^42458912491 is an apocalyptic number.

42458912491 is a deficient number, since it is larger than the sum of its proper divisors (1).

42458912491 is an equidigital number, since it uses as much as digits as its factorization.

42458912491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The spelling of 42458912491 in words is "forty-two billion, four hundred fifty-eight million, nine hundred twelve thousand, four hundred ninety-one".