42365621 has 8 divisors (see below), whose sum is σ = 43739520. Its totient is φ = 41009472.

The previous prime is 42365593. The next prime is 42365633. The reversal of 42365621 is 12656324.

42365621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42365621 - 2²² = 38171317 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 (42365681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500 + ... + 9218.

It is an arithmetic number, because the mean of its divisors is an integer number (5467440).

Almost surely, 2^42365621 is an apocalyptic number.

It is an amenable number.

42365621 is a deficient number, since it is larger than the sum of its proper divisors (1373899).

42365621 is a wasteful number, since it uses less digits than its factorization.

42365621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its digits is 8640, while the sum is 29.

The square root of 42365621 is about 6508.8878466294. The cubic root of 42365621 is about 348.6084090975.

The spelling of 42365621 in words is "forty-two million, three hundred sixty-five thousand, six hundred twenty-one".