442302404 has 12 divisors (see below), whose sum is σ = 774208428. Its totient is φ = 221100000.

The previous prime is 442302359. The next prime is 442302407. The reversal of 442302404 is 404203244.

It can be written as a sum of positive squares in 2 ways, for example, as 323928004 + 118374400 = 17998^2 + 10880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 442302404.

It is not an unprimeable number, because it can be changed into a prime (442302407) 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, 11954 + ... + 32054.

It is an arithmetic number, because the mean of its divisors is an integer number (64517369).

Almost surely, 2^442302404 is an apocalyptic number.

It is an amenable number.

442302404 is a deficient number, since it is larger than the sum of its proper divisors (331906024).

442302404 is a wasteful number, since it uses less digits than its factorization.

442302404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25606 (or 25604 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 442302404 is about 21030.9867576393. The cubic root of 442302404 is about 761.9148413500.

Adding to 442302404 its reverse (404203244), we get a palindrome (846505648).

The spelling of 442302404 in words is "four hundred forty-two million, three hundred two thousand, four hundred four".