42221043 has 6 divisors (see below), whose sum is σ = 60985964. Its totient is φ = 28147356.

The previous prime is 42221027. The next prime is 42221051. The reversal of 42221043 is 34012224.

It is not a de Polignac number, because 42221043 - 2⁴ = 42221027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42221063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345605 + ... + 2345622.

Almost surely, 2^42221043 is an apocalyptic number.

42221043 is a deficient number, since it is larger than the sum of its proper divisors (18764921).

42221043 is a wasteful number, since it uses less digits than its factorization.

42221043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691233 (or 4691230 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42221043 is about 6497.7721566703. The cubic root of 42221043 is about 348.2114004878.

Adding to 42221043 its reverse (34012224), we get a palindrome (76233267).

The spelling of 42221043 in words is "forty-two million, two hundred twenty-one thousand, forty-three".