4405203042421 has 8 divisors (see below), whose sum is σ = 4437595038744. Its totient is φ = 4372814484480.

The previous prime is 4405203042397. The next prime is 4405203042439. The reversal of 4405203042421 is 1242403025044.

It can be written as a sum of positive squares in 4 ways, for example, as 2469517960900 + 1935685081521 = 1571470^2 + 1391289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4405203042421 - 2⁵ = 4405203042389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405203022421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1741011 + ... + 3441151.

It is an arithmetic number, because the mean of its divisors is an integer number (554699379843).

Almost surely, 2^{4405203042421} is an apocalyptic number.

It is an amenable number.

4405203042421 is a deficient number, since it is larger than the sum of its proper divisors (32391996323).

4405203042421 is a wasteful number, since it uses less digits than its factorization.

4405203042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719191.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 4405203042421 its reverse (1242403025044), we get a palindrome (5647606067465).

The spelling of 4405203042421 in words is "four trillion, four hundred five billion, two hundred three million, forty-two thousand, four hundred twenty-one".