442031430 has 32 divisors (see below), whose sum is σ = 1061540064. Its totient is φ = 117801216.

The previous prime is 442031413. The next prime is 442031431. The reversal of 442031430 is 34130244.

It is a junction number, because it is equal to n+sod(n) for n = 442031397 and 442031406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442031431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58002 + ... + 65178.

It is an arithmetic number, because the mean of its divisors is an integer number (33173127).

Almost surely, 2^442031430 is an apocalyptic number.

442031430 is an abundant number, since it is smaller than the sum of its proper divisors (619508634).

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

442031430 is a wasteful number, since it uses less digits than its factorization.

442031430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 442031430 is about 21024.5435146640. The cubic root of 442031430 is about 761.7592153298.

Adding to 442031430 its reverse (34130244), we get a palindrome (476161674).

The spelling of 442031430 in words is "four hundred forty-two million, thirty-one thousand, four hundred thirty".