42221973 has 8 divisors (see below), whose sum is σ = 57358368. Its totient is φ = 27616784.

The previous prime is 42221957. The next prime is 42221987. The reversal of 42221973 is 37912224.

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 42221973 - 2⁴ = 42221957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42221973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221273) 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, 132615 + ... + 132932.

It is an arithmetic number, because the mean of its divisors is an integer number (7169796).

Almost surely, 2^42221973 is an apocalyptic number.

It is an amenable number.

42221973 is a deficient number, since it is larger than the sum of its proper divisors (15136395).

42221973 is a wasteful number, since it uses less digits than its factorization.

42221973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265603.

The product of its digits is 6048, while the sum is 30.

The square root of 42221973 is about 6497.8437192656. The cubic root of 42221973 is about 348.2139571452.

The spelling of 42221973 in words is "forty-two million, two hundred twenty-one thousand, nine hundred seventy-three".