4204402421 has 4 divisors (see below), whose sum is σ = 4210400844. Its totient is φ = 4198404000.

The previous prime is 4204402417. The next prime is 4204402427. The reversal of 4204402421 is 1242044024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3400056100 + 804346321 = 58310^2 + 28361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4204402421 - 2² = 4204402417 is a prime.

It is a super-2 number, since 2×4204402421² = 35353999435421322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4204402427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2998160 + ... + 2999561.

It is an arithmetic number, because the mean of its divisors is an integer number (1052600211).

Almost surely, 2^4204402421 is an apocalyptic number.

It is an amenable number.

4204402421 is a deficient number, since it is larger than the sum of its proper divisors (5998423).

4204402421 is an equidigital number, since it uses as much as digits as its factorization.

4204402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998422.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4204402421 is about 64841.3635035538. The cubic root of 4204402421 is about 1613.9921787089.

Adding to 4204402421 its reverse (1242044024), we get a palindrome (5446446445).

The spelling of 4204402421 in words is "four billion, two hundred four million, four hundred two thousand, four hundred twenty-one".