442723501 has 8 divisors (see below), whose sum is σ = 487754208. Its totient is φ = 398490000.

The previous prime is 442723487. The next prime is 442723511. The reversal of 442723501 is 105327244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442723501 - 2⁹ = 442722989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442723501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442723511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198135 + ... + 200356.

It is an arithmetic number, because the mean of its divisors is an integer number (60969276).

Almost surely, 2^442723501 is an apocalyptic number.

It is an amenable number.

442723501 is a deficient number, since it is larger than the sum of its proper divisors (45030707).

442723501 is a wasteful number, since it uses less digits than its factorization.

442723501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398603.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 442723501 is about 21040.9957226363. The cubic root of 442723501 is about 762.1565600517.

The spelling of 442723501 in words is "four hundred forty-two million, seven hundred twenty-three thousand, five hundred one".