442632402 has 12 divisors (see below), whose sum is σ = 959036910. Its totient is φ = 147544128.

The previous prime is 442632391. The next prime is 442632403. The reversal of 442632402 is 204236244.

It can be written as a sum of positive squares in only one way, i.e., 409212441 + 33419961 = 20229^2 + 5781^2 .

It is not an unprimeable number, because it can be changed into a prime (442632403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12295327 + ... + 12295362.

Almost surely, 2^442632402 is an apocalyptic number.

442632402 is an abundant number, since it is smaller than the sum of its proper divisors (516404508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442632402 is a wasteful number, since it uses less digits than its factorization.

442632402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24590697 (or 24590694 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 442632402 is about 21038.8308135219. The cubic root of 442632402 is about 762.1042802704.

Adding to 442632402 its reverse (204236244), we get a palindrome (646868646).

It can be divided in two parts, 44263 and 2402, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 442632402 in words is "four hundred forty-two million, six hundred thirty-two thousand, four hundred two".