42745057523 has 8 divisors (see below), whose sum is σ = 49890888192. Its totient is φ = 35859075336.

The previous prime is 42745057493. The next prime is 42745057543. The reversal of 42745057523 is 32575054724.

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

It is not a de Polignac number, because 42745057523 - 2¹⁶ = 42744991987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42745057543) 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, 64961765 + ... + 64962422.

It is an arithmetic number, because the mean of its divisors is an integer number (6236361024).

Almost surely, 2^42745057523 is an apocalyptic number.

42745057523 is a deficient number, since it is larger than the sum of its proper divisors (7145830669).

42745057523 is a wasteful number, since it uses less digits than its factorization.

42745057523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129924241.

The product of its (nonzero) digits is 1176000, while the sum is 44.

The spelling of 42745057523 in words is "forty-two billion, seven hundred forty-five million, fifty-seven thousand, five hundred twenty-three".