442135226 has 32 divisors (see below), whose sum is σ = 735101136. Its totient is φ = 198144000.

The previous prime is 442135223. The next prime is 442135229. The reversal of 442135226 is 622531244.

It is an interprime number because it is at equal distance from previous prime (442135223) and next prime (442135229).

It can be written as a sum of positive squares in 8 ways, for example, as 126540001 + 315595225 = 11249^2 + 17765^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (442135223) 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, 256046 + ... + 257766.

Almost surely, 2^442135226 is an apocalyptic number.

442135226 is a deficient number, since it is larger than the sum of its proper divisors (292965910).

442135226 is a wasteful number, since it uses less digits than its factorization.

442135226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018.

The product of its digits is 11520, while the sum is 29.

The square root of 442135226 is about 21027.0118181353. The cubic root of 442135226 is about 761.8188350508.

The spelling of 442135226 in words is "four hundred forty-two million, one hundred thirty-five thousand, two hundred twenty-six".