420433442 has 64 divisors (see below), whose sum is σ = 773587584. Its totient is φ = 168791040.

The previous prime is 420433381. The next prime is 420433451. The reversal of 420433442 is 244334024.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 31 ways as a sum of consecutive naturals, for example, 708698 + ... + 709290.

It is an arithmetic number, because the mean of its divisors is an integer number (12087306).

Almost surely, 2^420433442 is an apocalyptic number.

420433442 is a deficient number, since it is larger than the sum of its proper divisors (353154142).

420433442 is a wasteful number, since it uses less digits than its factorization.

420433442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 420433442 is about 20504.4737069743. The cubic root of 420433442 is about 749.1447685503.

Adding to 420433442 its reverse (244334024), we get a palindrome (664767466).

The spelling of 420433442 in words is "four hundred twenty million, four hundred thirty-three thousand, four hundred forty-two".