42221056 has 20 divisors (see below), whose sum is σ = 84360672. Its totient is φ = 21110272.

The previous prime is 42221051. The next prime is 42221057. The reversal of 42221056 is 65012224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40720 + ... + 41743.

Almost surely, 2^42221056 is an apocalyptic number.

It is an amenable number.

42221056 is a deficient number, since it is larger than the sum of its proper divisors (42139616).

42221056 is an frugal number, since it uses more digits than its factorization.

42221056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82481 (or 82465 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 42221056 is about 6497.7731570131. The cubic root of 42221056 is about 348.2114362263.

The spelling of 42221056 in words is "forty-two million, two hundred twenty-one thousand, fifty-six".