442831402 has 64 divisors (see below), whose sum is σ = 781208064. Its totient is φ = 186439680.

The previous prime is 442831339. The next prime is 442831409. The reversal of 442831402 is 204138244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (442831409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3232278 + ... + 3232414.

It is an arithmetic number, because the mean of its divisors is an integer number (12206376).

Almost surely, 2^442831402 is an apocalyptic number.

442831402 is a deficient number, since it is larger than the sum of its proper divisors (338376662).

442831402 is a wasteful number, since it uses less digits than its factorization.

442831402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 442831402 is about 21043.5596323436. The cubic root of 442831402 is about 762.2184728668.

Adding to 442831402 its reverse (204138244), we get a palindrome (646969646).

The spelling of 442831402 in words is "four hundred forty-two million, eight hundred thirty-one thousand, four hundred two".