42545254523 has 4 divisors (see below), whose sum is σ = 42761220480. Its totient is φ = 42329288568.

The previous prime is 42545254429. The next prime is 42545254541. The reversal of 42545254523 is 32545254524.

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

It is a cyclic number.

It is not a de Polignac number, because 42545254523 - 2²⁰ = 42544205947 is a prime.

It is a super-3 number, since 3×42545254523³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42545254123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107982683 + ... + 107983076.

It is an arithmetic number, because the mean of its divisors is an integer number (10690305120).

Almost surely, 2^42545254523 is an apocalyptic number.

42545254523 is a deficient number, since it is larger than the sum of its proper divisors (215965957).

42545254523 is a wasteful number, since it uses less digits than its factorization.

42545254523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215965956.

The product of its digits is 960000, while the sum is 41.

Subtracting from 42545254523 its reverse (32545254524), we obtain a palindrome (9999999999).

The spelling of 42545254523 in words is "forty-two billion, five hundred forty-five million, two hundred fifty-four thousand, five hundred twenty-three".