42976321 has 8 divisors (see below), whose sum is σ = 43704864. Its totient is φ = 42252960.

The previous prime is 42976319. The next prime is 42976327. The reversal of 42976321 is 12367924.

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 42976321 - 2¹ = 42976319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42976327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17701 + ... + 19981.

It is an arithmetic number, because the mean of its divisors is an integer number (5463108).

Almost surely, 2^42976321 is an apocalyptic number.

It is an amenable number.

42976321 is a deficient number, since it is larger than the sum of its proper divisors (728543).

42976321 is a wasteful number, since it uses less digits than its factorization.

42976321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its digits is 18144, while the sum is 34.

The square root of 42976321 is about 6555.6327688485. The cubic root of 42976321 is about 350.2754865079.

The spelling of 42976321 in words is "forty-two million, nine hundred seventy-six thousand, three hundred twenty-one".