442430343 has 12 divisors (see below), whose sum is σ = 662735528. Its totient is φ = 294953400.

The previous prime is 442430291. The next prime is 442430363. The reversal of 442430343 is 343034244.

It is not a de Polignac number, because 442430343 - 2¹² = 442426247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442430363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 910108 + ... + 910593.

Almost surely, 2^442430343 is an apocalyptic number.

442430343 is a deficient number, since it is larger than the sum of its proper divisors (220305185).

442430343 is an equidigital number, since it uses as much as digits as its factorization.

442430343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820716 (or 1820704 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

The square root of 442430343 is about 21034.0282162024. The cubic root of 442430343 is about 761.9882972969.

Adding to 442430343 its reverse (343034244), we get a palindrome (785464587).

The spelling of 442430343 in words is "four hundred forty-two million, four hundred thirty thousand, three hundred forty-three".