4042633243421 has 4 divisors (see below), whose sum is σ = 4042639152252. Its totient is φ = 4042627334592.

The previous prime is 4042633243321. The next prime is 4042633243487. The reversal of 4042633243421 is 1243423362404.

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 1554634922500 + 2487998320921 = 1246850^2 + 1577339^2 .

It is a cyclic number.

It is not a de Polignac number, because 4042633243421 - 2²² = 4042629049117 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 (4042633243021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769846 + ... + 3349271.

It is an arithmetic number, because the mean of its divisors is an integer number (1010659788063).

Almost surely, 2^{4042633243421} is an apocalyptic number.

It is an amenable number.

4042633243421 is a deficient number, since it is larger than the sum of its proper divisors (5908831).

4042633243421 is an equidigital number, since it uses as much as digits as its factorization.

4042633243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908830.

The product of its (nonzero) digits is 331776, while the sum is 38.

The spelling of 4042633243421 in words is "four trillion, forty-two billion, six hundred thirty-three million, two hundred forty-three thousand, four hundred twenty-one".