42464621 has 4 divisors (see below), whose sum is σ = 42488544. Its totient is φ = 42440700.

The previous prime is 42464599. The next prime is 42464627. The reversal of 42464621 is 12646424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42464621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42464627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9065 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (10622136).

Almost surely, 2^42464621 is an apocalyptic number.

It is an amenable number.

42464621 is a deficient number, since it is larger than the sum of its proper divisors (23923).

42464621 is a wasteful number, since it uses less digits than its factorization.

42464621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23922.

The product of its digits is 9216, while the sum is 29.

The square root of 42464621 is about 6516.4883948335. The cubic root of 42464621 is about 348.8797406143.

The spelling of 42464621 in words is "forty-two million, four hundred sixty-four thousand, six hundred twenty-one".