42221433 has 16 divisors (see below), whose sum is σ = 57127680. Its totient is φ = 27734784.

The previous prime is 42221407. The next prime is 42221437. The reversal of 42221433 is 33412224.

It is not a de Polignac number, because 42221433 - 2¹⁷ = 42090361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42221437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90960 + ... + 91422.

It is an arithmetic number, because the mean of its divisors is an integer number (3570480).

Almost surely, 2^42221433 is an apocalyptic number.

It is an amenable number.

42221433 is a deficient number, since it is larger than the sum of its proper divisors (14906247).

42221433 is a wasteful number, since it uses less digits than its factorization.

42221433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 1152, while the sum is 21.

The square root of 42221433 is about 6497.8021668869. The cubic root of 42221433 is about 348.2124726390.

Adding to 42221433 its reverse (33412224), we get a palindrome (75633657).

The spelling of 42221433 in words is "forty-two million, two hundred twenty-one thousand, four hundred thirty-three".