420004442 has 16 divisors (see below), whose sum is σ = 740148192. Its totient is φ = 176225520.

The previous prime is 420004433. The next prime is 420004447. The reversal of 420004442 is 244400024.

It is not an unprimeable number, because it can be changed into a prime (420004447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733988 + ... + 734559.

It is an arithmetic number, because the mean of its divisors is an integer number (46259262).

Almost surely, 2^420004442 is an apocalyptic number.

420004442 is a deficient number, since it is larger than the sum of its proper divisors (320143750).

420004442 is a wasteful number, since it uses less digits than its factorization.

420004442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468573.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 420004442 is about 20494.0099053358. The cubic root of 420004442 is about 748.8898788372.

Adding to 420004442 its reverse (244400024), we get a palindrome (664404466).

The spelling of 420004442 in words is "four hundred twenty million, four thousand, four hundred forty-two".