420442004 has 24 divisors (see below), whose sum is σ = 753866568. Its totient is φ = 205096320.

The previous prime is 420441991. The next prime is 420442007. The reversal of 420442004 is 400244024.

It can be written as a sum of positive squares in 4 ways, for example, as 21641104 + 398800900 = 4652^2 + 19970^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420442007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32894 + ... + 43850.

It is an arithmetic number, because the mean of its divisors is an integer number (31411107).

Almost surely, 2^420442004 is an apocalyptic number.

It is an amenable number.

420442004 is a deficient number, since it is larger than the sum of its proper divisors (333424564).

420442004 is a wasteful number, since it uses less digits than its factorization.

420442004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11195 (or 11193 counting only the distinct ones).

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

The square root of 420442004 is about 20504.6824896169. The cubic root of 420442004 is about 749.1498538847.

Adding to 420442004 its reverse (400244024), we get a palindrome (820686028).

The spelling of 420442004 in words is "four hundred twenty million, four hundred forty-two thousand, four".