42662921 has 8 divisors (see below), whose sum is σ = 48907584. Its totient is φ = 36455760.

The previous prime is 42662903. The next prime is 42662941. The reversal of 42662921 is 12926624.

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 42662921 - 2¹⁴ = 42646537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42662941) 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, 6890 + ... + 11523.

It is an arithmetic number, because the mean of its divisors is an integer number (6113448).

Almost surely, 2^42662921 is an apocalyptic number.

It is an amenable number.

42662921 is a deficient number, since it is larger than the sum of its proper divisors (6244663).

42662921 is a wasteful number, since it uses less digits than its factorization.

42662921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18751.

The product of its digits is 10368, while the sum is 32.

The square root of 42662921 is about 6531.6859232514. The cubic root of 42662921 is about 349.4219601539.

The spelling of 42662921 in words is "forty-two million, six hundred sixty-two thousand, nine hundred twenty-one".