442045520 has 40 divisors (see below), whose sum is σ = 1174579584. Its totient is φ = 151558272.

The previous prime is 442045501. The next prime is 442045531. The reversal of 442045520 is 25540244.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 442045520.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 394124 + ... + 395243.

Almost surely, 2^442045520 is an apocalyptic number.

442045520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442045520 is an abundant number, since it is smaller than the sum of its proper divisors (732534064).

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

442045520 is a wasteful number, since it uses less digits than its factorization.

442045520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789387 (or 789381 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 442045520 is about 21024.8785965579. The cubic root of 442045520 is about 761.7673090781.

Adding to 442045520 its reverse (25540244), we get a palindrome (467585764).

The spelling of 442045520 in words is "four hundred forty-two million, forty-five thousand, five hundred twenty".