42257312542 has 4 divisors (see below), whose sum is σ = 63385968816. Its totient is φ = 21128656270.

The previous prime is 42257312497. The next prime is 42257312551. The reversal of 42257312542 is 24521375224.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10564328134 + ... + 10564328137.

It is an arithmetic number, because the mean of its divisors is an integer number (15846492204).

Almost surely, 2^42257312542 is an apocalyptic number.

42257312542 is a deficient number, since it is larger than the sum of its proper divisors (21128656274).

42257312542 is a wasteful number, since it uses less digits than its factorization.

42257312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21128656273.

The product of its digits is 134400, while the sum is 37.

Adding to 42257312542 its reverse (24521375224), we get a palindrome (66778687766).

The spelling of 42257312542 in words is "forty-two billion, two hundred fifty-seven million, three hundred twelve thousand, five hundred forty-two".