42944725921 has 8 divisors (see below), whose sum is σ = 42995025920. Its totient is φ = 42894454608.

The previous prime is 42944725919. The next prime is 42944725969. The reversal of 42944725921 is 12952744924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42944725921 - 2¹ = 42944725919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42944725991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4493470 + ... + 4503016.

It is an arithmetic number, because the mean of its divisors is an integer number (5374378240).

Almost surely, 2^42944725921 is an apocalyptic number.

It is an amenable number.

42944725921 is a deficient number, since it is larger than the sum of its proper divisors (50299999).

42944725921 is a wasteful number, since it uses less digits than its factorization.

42944725921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14343.

The product of its digits is 1451520, while the sum is 49.

The spelling of 42944725921 in words is "forty-two billion, nine hundred forty-four million, seven hundred twenty-five thousand, nine hundred twenty-one".