42145243597 has 4 divisors (see below), whose sum is σ = 43504767616. Its totient is φ = 40785719580.

The previous prime is 42145243589. The next prime is 42145243603. The reversal of 42145243597 is 79534254124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42145243597 - 2³ = 42145243589 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 (42145243537) 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, 679761963 + ... + 679762024.

It is an arithmetic number, because the mean of its divisors is an integer number (10876191904).

Almost surely, 2^42145243597 is an apocalyptic number.

It is an amenable number.

42145243597 is a deficient number, since it is larger than the sum of its proper divisors (1359524019).

42145243597 is a wasteful number, since it uses less digits than its factorization.

42145243597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359524018.

The product of its digits is 1209600, while the sum is 46.

The spelling of 42145243597 in words is "forty-two billion, one hundred forty-five million, two hundred forty-three thousand, five hundred ninety-seven".