43222442 has 4 divisors (see below), whose sum is σ = 64833666. Its totient is φ = 21611220.

The previous prime is 43222411. The next prime is 43222447. The reversal of 43222442 is 24422234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40436881 + 2785561 = 6359^2 + 1669^2 .

It is not an unprimeable number, because it can be changed into a prime (43222447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10805609 + ... + 10805612.

Almost surely, 2^43222442 is an apocalyptic number.

43222442 is a deficient number, since it is larger than the sum of its proper divisors (21611224).

43222442 is a wasteful number, since it uses less digits than its factorization.

43222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21611223.

The product of its digits is 3072, while the sum is 23.

The square root of 43222442 is about 6574.3776891809. The cubic root of 43222442 is about 350.9428780728.

Adding to 43222442 its reverse (24422234), we get a palindrome (67644676).

The spelling of 43222442 in words is "forty-three million, two hundred twenty-two thousand, four hundred forty-two".