42152145643 has 4 divisors (see below), whose sum is σ = 44631683640. Its totient is φ = 39672607648.

The previous prime is 42152145631. The next prime is 42152145649. The reversal of 42152145643 is 34654125124.

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 42152145643 - 2⁵ = 42152145611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42152145649) 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, 1239768973 + ... + 1239769006.

It is an arithmetic number, because the mean of its divisors is an integer number (11157920910).

Almost surely, 2^42152145643 is an apocalyptic number.

42152145643 is a deficient number, since it is larger than the sum of its proper divisors (2479537997).

42152145643 is a wasteful number, since it uses less digits than its factorization.

42152145643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479537996.

The product of its digits is 115200, while the sum is 37.

The spelling of 42152145643 in words is "forty-two billion, one hundred fifty-two million, one hundred forty-five thousand, six hundred forty-three".