442304040 has 64 divisors (see below), whose sum is σ = 1396756800. Its totient is φ = 111739392.

The previous prime is 442304033. The next prime is 442304041. The reversal of 442304040 is 40403244.

It is a junction number, because it is equal to n+sod(n) for n = 442303998 and 442304016.

It is not an unprimeable number, because it can be changed into a prime (442304041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94717 + ... + 99276.

It is an arithmetic number, because the mean of its divisors is an integer number (21824325).

Almost surely, 2^442304040 is an apocalyptic number.

442304040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442304040 is an abundant number, since it is smaller than the sum of its proper divisors (954452760).

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

442304040 is a wasteful number, since it uses less digits than its factorization.

442304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194026 (or 194022 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 442304040 is about 21031.0256525924. The cubic root of 442304040 is about 761.9157807459.

Adding to 442304040 its reverse (40403244), we get a palindrome (482707284).

The spelling of 442304040 in words is "four hundred forty-two million, three hundred four thousand, forty".