4042401414421 has 2 divisors, whose sum is σ = 4042401414422. Its totient is φ = 4042401414420.

The previous prime is 4042401414391. The next prime is 4042401414427. The reversal of 4042401414421 is 1244141042404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3397128196900 + 645273217521 = 1843130^2 + 803289^2 .

It is a cyclic number.

It is not a de Polignac number, because 4042401414421 - 2³³ = 4033811479829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4042401414427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021200707210 + 2021200707211.

It is an arithmetic number, because the mean of its divisors is an integer number (2021200707211).

Almost surely, 2^{4042401414421} is an apocalyptic number.

It is an amenable number.

4042401414421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042401414421 is an equidigital number, since it uses as much as digits as its factorization.

4042401414421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 4042401414421 its reverse (1244141042404), we get a palindrome (5286542456825).

The spelling of 4042401414421 in words is "four trillion, forty-two billion, four hundred one million, four hundred fourteen thousand, four hundred twenty-one".