42221597 has 8 divisors (see below), whose sum is σ = 47546112. Its totient is φ = 37144800.

The previous prime is 42221587. The next prime is 42221611. The reversal of 42221597 is 79512224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42221597 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 (42221527) 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, 61568 + ... + 62249.

It is an arithmetic number, because the mean of its divisors is an integer number (5943264).

Almost surely, 2^42221597 is an apocalyptic number.

It is an amenable number.

42221597 is a deficient number, since it is larger than the sum of its proper divisors (5324515).

42221597 is a wasteful number, since it uses less digits than its factorization.

42221597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123859.

The product of its digits is 10080, while the sum is 32.

The square root of 42221597 is about 6497.8147865263. The cubic root of 42221597 is about 348.2129234904.

The spelling of 42221597 in words is "forty-two million, two hundred twenty-one thousand, five hundred ninety-seven".