42547073523 has 4 divisors (see below), whose sum is σ = 56729431368. Its totient is φ = 28364715680.

The previous prime is 42547073519. The next prime is 42547073563. The reversal of 42547073523 is 32537074524.

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 42547073523 - 2² = 42547073519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42547073563) 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, 7091178918 + ... + 7091178923.

It is an arithmetic number, because the mean of its divisors is an integer number (14182357842).

Almost surely, 2^42547073523 is an apocalyptic number.

42547073523 is a deficient number, since it is larger than the sum of its proper divisors (14182357845).

42547073523 is a wasteful number, since it uses less digits than its factorization.

42547073523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14182357844.

The product of its (nonzero) digits is 705600, while the sum is 42.

The spelling of 42547073523 in words is "forty-two billion, five hundred forty-seven million, seventy-three thousand, five hundred twenty-three".