442102130 has 16 divisors (see below), whose sum is σ = 797356440. Its totient is φ = 176491392.

The previous prime is 442102123. The next prime is 442102231. The reversal of 442102130 is 31201244.

It can be written as a sum of positive squares in 4 ways, for example, as 386554921 + 55547209 = 19661^2 + 7453^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442102099 and 442102108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38339 + ... + 48518.

Almost surely, 2^442102130 is an apocalyptic number.

442102130 is a deficient number, since it is larger than the sum of its proper divisors (355254310).

442102130 is a wasteful number, since it uses less digits than its factorization.

442102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87373.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 442102130 is about 21026.2248156915. The cubic root of 442102130 is about 761.7998259454.

Adding to 442102130 its reverse (31201244), we get a palindrome (473303374).

The spelling of 442102130 in words is "four hundred forty-two million, one hundred two thousand, one hundred thirty".