42072072523 has 16 divisors (see below), whose sum is σ = 45423120736. Its totient is φ = 38737543680.

The previous prime is 42072072503. The next prime is 42072072541. The reversal of 42072072523 is 32527027024.

42072072523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42072072523 - 2⁵ = 42072072491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42072072503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14159428 + ... + 14162398.

It is an arithmetic number, because the mean of its divisors is an integer number (2838945046).

Almost surely, 2^42072072523 is an apocalyptic number.

42072072523 is a deficient number, since it is larger than the sum of its proper divisors (3351048213).

42072072523 is a wasteful number, since it uses less digits than its factorization.

42072072523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374.

The product of its (nonzero) digits is 47040, while the sum is 34.

Adding to 42072072523 its reverse (32527027024), we get a palindrome (74599099547).

The spelling of 42072072523 in words is "forty-two billion, seventy-two million, seventy-two thousand, five hundred twenty-three".