442402434 has 24 divisors (see below), whose sum is σ = 963089712. Its totient is φ = 146767320.

The previous prime is 442402421. The next prime is 442402463. The reversal of 442402434 is 434204244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442402398 and 442402407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54444 + ... + 62039.

It is an arithmetic number, because the mean of its divisors is an integer number (40128738).

Almost surely, 2^442402434 is an apocalyptic number.

442402434 is an abundant number, since it is smaller than the sum of its proper divisors (520687278).

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

442402434 is a wasteful number, since it uses less digits than its factorization.

442402434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116702 (or 116699 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 442402434 is about 21033.3647807478. The cubic root of 442402434 is about 761.9722746024.

Adding to 442402434 its reverse (434204244), we get a palindrome (876606678).

The spelling of 442402434 in words is "four hundred forty-two million, four hundred two thousand, four hundred thirty-four".