42981923 has 8 divisors (see below), whose sum is σ = 44290368. Its totient is φ = 41689984.

The previous prime is 42981919. The next prime is 42981929. The reversal of 42981923 is 32918924.

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 42981923 - 2² = 42981919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42981929) 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, 1265 + ... + 9357.

It is an arithmetic number, because the mean of its divisors is an integer number (5536296).

Almost surely, 2^42981923 is an apocalyptic number.

42981923 is a deficient number, since it is larger than the sum of its proper divisors (1308445).

42981923 is a wasteful number, since it uses less digits than its factorization.

42981923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253.

The product of its digits is 31104, while the sum is 38.

The square root of 42981923 is about 6556.0600210797. The cubic root of 42981923 is about 350.2907054158.

The spelling of 42981923 in words is "forty-two million, nine hundred eighty-one thousand, nine hundred twenty-three".