442145044 has 48 divisors (see below), whose sum is σ = 901829376. Its totient is φ = 187443200.

The previous prime is 442145021. The next prime is 442145059. The reversal of 442145044 is 440541244.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81909 + ... + 87139.

It is an arithmetic number, because the mean of its divisors is an integer number (18788112).

Almost surely, 2^442145044 is an apocalyptic number.

442145044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442145044 is an abundant number, since it is smaller than the sum of its proper divisors (459684332).

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

442145044 is a wasteful number, since it uses less digits than its factorization.

442145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5374 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 442145044 is about 21027.2452784477. The cubic root of 442145044 is about 761.8244739606.

Adding to 442145044 its reverse (440541244), we get a palindrome (882686288).

The spelling of 442145044 in words is "four hundred forty-two million, one hundred forty-five thousand, forty-four".