420441434321401 has 2 divisors, whose sum is σ = 420441434321402. Its totient is φ = 420441434321400.

The previous prime is 420441434321387. The next prime is 420441434321473. The reversal of 420441434321401 is 104123434144024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415299605967801 + 5141828353600 = 20378901^2 + 2267560^2 .

It is a cyclic number.

It is not a de Polignac number, because 420441434321401 - 2¹³ = 420441434313209 is a prime.

It is a super-2 number, since 2×420441434321401² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420441434325401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210220717160700 + 210220717160701.

It is an arithmetic number, because the mean of its divisors is an integer number (210220717160701).

Almost surely, 2^{420441434321401} is an apocalyptic number.

It is an amenable number.

420441434321401 is a deficient number, since it is larger than the sum of its proper divisors (1).

420441434321401 is an equidigital number, since it uses as much as digits as its factorization.

420441434321401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 420441434321401 its reverse (104123434144024), we get a palindrome (524564868465425).

The spelling of 420441434321401 in words is "four hundred twenty trillion, four hundred forty-one billion, four hundred thirty-four million, three hundred twenty-one thousand, four hundred one".