442240430 has 32 divisors (see below), whose sum is σ = 825344640. Its totient is φ = 170410240.

The previous prime is 442240399. The next prime is 442240439. The reversal of 442240430 is 34042244.

It is a junction number, because it is equal to n+sod(n) for n = 442240396 and 442240405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442240439) 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, 149627 + ... + 152553.

It is an arithmetic number, because the mean of its divisors is an integer number (25792020).

Almost surely, 2^442240430 is an apocalyptic number.

442240430 is a deficient number, since it is larger than the sum of its proper divisors (383104210).

442240430 is a wasteful number, since it uses less digits than its factorization.

442240430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 442240430 is about 21029.5133086812. The cubic root of 442240430 is about 761.8792539966.

Adding to 442240430 its reverse (34042244), we get a palindrome (476282674).

The spelling of 442240430 in words is "four hundred forty-two million, two hundred forty thousand, four hundred thirty".