2404420323421 has 4 divisors (see below), whose sum is σ = 2545856813052. Its totient is φ = 2262983833792.

The previous prime is 2404420323419. The next prime is 2404420323439. The reversal of 2404420323421 is 1243230244042.

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 1134674474521 + 1269745848900 = 1065211^2 + 1126830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2404420323421 - 2¹ = 2404420323419 is a prime.

It is a super-3 number, since 3×2404420323421³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2404420326421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70718244790 + ... + 70718244823.

It is an arithmetic number, because the mean of its divisors is an integer number (636464203263).

Almost surely, 2^{2404420323421} is an apocalyptic number.

It is an amenable number.

2404420323421 is a deficient number, since it is larger than the sum of its proper divisors (141436489631).

2404420323421 is a wasteful number, since it uses less digits than its factorization.

2404420323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141436489630.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 2404420323421 its reverse (1243230244042), we get a palindrome (3647650567463).

The spelling of 2404420323421 in words is "two trillion, four hundred four billion, four hundred twenty million, three hundred twenty-three thousand, four hundred twenty-one".