442122106 has 8 divisors (see below), whose sum is σ = 679358484. Its totient is φ = 215669280.

The previous prime is 442122103. The next prime is 442122113. The reversal of 442122106 is 601221244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 437019025 + 5103081 = 20905^2 + 2259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×442122106² = 390943913227750472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442122101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695785 + ... + 2695948.

Almost surely, 2^442122106 is an apocalyptic number.

442122106 is a deficient number, since it is larger than the sum of its proper divisors (237236378).

442122106 is a wasteful number, since it uses less digits than its factorization.

442122106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391776.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 442122106 is about 21026.6998361607. The cubic root of 442122106 is about 761.8112995267.

The spelling of 442122106 in words is "four hundred forty-two million, one hundred twenty-two thousand, one hundred six".