42457490247 has 4 divisors (see below), whose sum is σ = 56609987000. Its totient is φ = 28304993496.

The previous prime is 42457490227. The next prime is 42457490311. The reversal of 42457490247 is 74209475424.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42457490247 - 2³⁰ = 41383748423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42457490196 and 42457490205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42457490227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7076248372 + ... + 7076248377.

It is an arithmetic number, because the mean of its divisors is an integer number (14152496750).

Almost surely, 2^42457490247 is an apocalyptic number.

42457490247 is a deficient number, since it is larger than the sum of its proper divisors (14152496753).

42457490247 is a wasteful number, since it uses less digits than its factorization.

42457490247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14152496752.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 42457490247 in words is "forty-two billion, four hundred fifty-seven million, four hundred ninety thousand, two hundred forty-seven".