42344981 has 8 divisors (see below), whose sum is σ = 49520064. Its totient is φ = 35451360.

The previous prime is 42344971. The next prime is 42344987. The reversal of 42344981 is 18944324.

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

It is not a de Polignac number, because 42344981 - 2⁶ = 42344917 is a prime.

It is a super-2 number, since 2×42344981² = 3586194831780722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42344987) 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, 70040 + ... + 70641.

It is an arithmetic number, because the mean of its divisors is an integer number (6190008).

Almost surely, 2^42344981 is an apocalyptic number.

It is an amenable number.

42344981 is a deficient number, since it is larger than the sum of its proper divisors (7175083).

42344981 is a wasteful number, since it uses less digits than its factorization.

42344981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140731.

The product of its digits is 27648, while the sum is 35.

The square root of 42344981 is about 6507.3021291469. The cubic root of 42344981 is about 348.5517873510.

The spelling of 42344981 in words is "forty-two million, three hundred forty-four thousand, nine hundred eighty-one".