442130344 has 8 divisors (see below), whose sum is σ = 828994410. Its totient is φ = 221065168.

The previous prime is 442130333. The next prime is 442130389. The reversal of 442130344 is 443031244.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 106874244 = 18310^2 + 10338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27633139 + ... + 27633154.

Almost surely, 2^442130344 is an apocalyptic number.

It is an amenable number.

442130344 is a deficient number, since it is larger than the sum of its proper divisors (386864066).

442130344 is a wasteful number, since it uses less digits than its factorization.

442130344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55266299 (or 55266295 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 442130344 is about 21026.8957290419. The cubic root of 442130344 is about 761.8160310721.

Adding to 442130344 its reverse (443031244), we get a palindrome (885161588).

The spelling of 442130344 in words is "four hundred forty-two million, one hundred thirty thousand, three hundred forty-four".