442191724 has 48 divisors (see below), whose sum is σ = 857445120. Its totient is φ = 198236160.

The previous prime is 442191703. The next prime is 442191727. The reversal of 442191724 is 427191244.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 442191724.

It is not an unprimeable number, because it can be changed into a prime (442191727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922917 + ... + 923395.

It is an arithmetic number, because the mean of its divisors is an integer number (17863440).

Almost surely, 2^442191724 is an apocalyptic number.

It is an amenable number.

442191724 is a deficient number, since it is larger than the sum of its proper divisors (415253396).

442191724 is a wasteful number, since it uses less digits than its factorization.

442191724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 968 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 442191724 is about 21028.3552376309. The cubic root of 442191724 is about 761.8512831985.

The spelling of 442191724 in words is "four hundred forty-two million, one hundred ninety-one thousand, seven hundred twenty-four".