42622561 has 8 divisors (see below), whose sum is σ = 43714944. Its totient is φ = 41538000.

The previous prime is 42622549. The next prime is 42622579. The reversal of 42622561 is 16522624.

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 42622561 - 2⁹ = 42622049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42622501) 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, 9991 + ... + 13603.

It is an arithmetic number, because the mean of its divisors is an integer number (5464368).

Almost surely, 2^42622561 is an apocalyptic number.

It is an amenable number.

42622561 is a deficient number, since it is larger than the sum of its proper divisors (1092383).

42622561 is a wasteful number, since it uses less digits than its factorization.

42622561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 5760, while the sum is 28.

The square root of 42622561 is about 6528.5956376544. The cubic root of 42622561 is about 349.3117386043.

The spelling of 42622561 in words is "forty-two million, six hundred twenty-two thousand, five hundred sixty-one".