442512045 has 32 divisors (see below), whose sum is σ = 807959040. Its totient is φ = 229625280.

The previous prime is 442512041. The next prime is 442512067. The reversal of 442512045 is 540215244.

It is not a de Polignac number, because 442512045 - 2² = 442512041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442512041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 39301 + ... + 49290.

It is an arithmetic number, because the mean of its divisors is an integer number (25248720).

Almost surely, 2^442512045 is an apocalyptic number.

442512045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442512045 is a deficient number, since it is larger than the sum of its proper divisors (365446995).

442512045 is a wasteful number, since it uses less digits than its factorization.

442512045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88642 (or 88636 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 442512045 is about 21035.9702652385. The cubic root of 442512045 is about 762.0351989444.

Adding to 442512045 its reverse (540215244), we get a palindrome (982727289).

The spelling of 442512045 in words is "four hundred forty-two million, five hundred twelve thousand, forty-five".