442136724 has 12 divisors (see below), whose sum is σ = 1031652384. Its totient is φ = 147378904.

The previous prime is 442136713. The next prime is 442136741. The reversal of 442136724 is 427631244.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18422352 + ... + 18422375.

It is an arithmetic number, because the mean of its divisors is an integer number (85971032).

Almost surely, 2^442136724 is an apocalyptic number.

It is an amenable number.

442136724 is an abundant number, since it is smaller than the sum of its proper divisors (589515660).

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

442136724 is a wasteful number, since it uses less digits than its factorization.

442136724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36844734 (or 36844732 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 442136724 is about 21027.0474389535. The cubic root of 442136724 is about 761.8196954236.

Adding to 442136724 its reverse (427631244), we get a palindrome (869767968).

The spelling of 442136724 in words is "four hundred forty-two million, one hundred thirty-six thousand, seven hundred twenty-four".