421420444024241 has 2 divisors, whose sum is σ = 421420444024242. Its totient is φ = 421420444024240.

The previous prime is 421420444024109. The next prime is 421420444024259. The reversal of 421420444024241 is 142420444024124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302476794259600 + 118943649764641 = 17391860^2 + 10906129^2 .

It is a cyclic number.

It is not a de Polignac number, because 421420444024241 - 2³⁴ = 421403264155057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421420444024195 and 421420444024204.

It is not a weakly prime, because it can be changed into another prime (421420444024271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210710222012120 + 210710222012121.

It is an arithmetic number, because the mean of its divisors is an integer number (210710222012121).

Almost surely, 2^{421420444024241} is an apocalyptic number.

It is an amenable number.

421420444024241 is a deficient number, since it is larger than the sum of its proper divisors (1).

421420444024241 is an equidigital number, since it uses as much as digits as its factorization.

421420444024241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262144, while the sum is 38.

Adding to 421420444024241 its reverse (142420444024124), we get a palindrome (563840888048365).

The spelling of 421420444024241 in words is "four hundred twenty-one trillion, four hundred twenty billion, four hundred forty-four million, twenty-four thousand, two hundred forty-one".