442102225 has 6 divisors (see below), whose sum is σ = 548206790. Its totient is φ = 353681760.

The previous prime is 442102123. The next prime is 442102231. The reversal of 442102225 is 522201244.

It can be written as a sum of positive squares in 3 ways, for example, as 8088336 + 434013889 = 2844^2 + 20833^2 .

It is not a de Polignac number, because 442102225 - 2⁹ = 442101713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442102196 and 442102205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8842020 + ... + 8842069.

Almost surely, 2^442102225 is an apocalyptic number.

It is an amenable number.

442102225 is a deficient number, since it is larger than the sum of its proper divisors (106104565).

442102225 is a wasteful number, since it uses less digits than its factorization.

442102225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17684099 (or 17684094 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 442102225 is about 21026.2270747750. The cubic root of 442102225 is about 761.7998805112.

Adding to 442102225 its reverse (522201244), we get a palindrome (964303469).

The spelling of 442102225 in words is "four hundred forty-two million, one hundred two thousand, two hundred twenty-five".