421141402321 has 2 divisors, whose sum is σ = 421141402322. Its totient is φ = 421141402320.

The previous prime is 421141402267. The next prime is 421141402351. The reversal of 421141402321 is 123204141124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326114092096 + 95027310225 = 571064^2 + 308265^2 .

It is a cyclic number.

It is not a de Polignac number, because 421141402321 - 2⁹ = 421141401809 is a prime.

It is not a weakly prime, because it can be changed into another prime (421141402351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210570701160 + 210570701161.

It is an arithmetic number, because the mean of its divisors is an integer number (210570701161).

Almost surely, 2^421141402321 is an apocalyptic number.

It is an amenable number.

421141402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

421141402321 is an equidigital number, since it uses as much as digits as its factorization.

421141402321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 421141402321 its reverse (123204141124), we get a palindrome (544345543445).

The spelling of 421141402321 in words is "four hundred twenty-one billion, one hundred forty-one million, four hundred two thousand, three hundred twenty-one".