42656542523 has 8 divisors (see below), whose sum is σ = 48817396992. Its totient is φ = 36512453736.

The previous prime is 42656542519. The next prime is 42656542529. The reversal of 42656542523 is 32524565624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42656542523 - 2² = 42656542519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42656542529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4185965 + ... + 4196142.

It is an arithmetic number, because the mean of its divisors is an integer number (6102174624).

Almost surely, 2^42656542523 is an apocalyptic number.

42656542523 is a deficient number, since it is larger than the sum of its proper divisors (6160854469).

42656542523 is an equidigital number, since it uses as much as digits as its factorization.

42656542523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382841.

The product of its digits is 1728000, while the sum is 44.

The spelling of 42656542523 in words is "forty-two billion, six hundred fifty-six million, five hundred forty-two thousand, five hundred twenty-three".