42160723991 has 4 divisors (see below), whose sum is σ = 42243555000. Its totient is φ = 42077892984.

The previous prime is 42160723973. The next prime is 42160724003. The reversal of 42160723991 is 19932706124.

42160723991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42160723991 - 2³⁴ = 24980854807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42160723931) 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, 41414741 + ... + 41415758.

It is an arithmetic number, because the mean of its divisors is an integer number (10560888750).

Almost surely, 2^42160723991 is an apocalyptic number.

42160723991 is a deficient number, since it is larger than the sum of its proper divisors (82831009).

42160723991 is an equidigital number, since it uses as much as digits as its factorization.

42160723991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82831008.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 42160723991 in words is "forty-two billion, one hundred sixty million, seven hundred twenty-three thousand, nine hundred ninety-one".