420411401 has 2 divisors, whose sum is σ = 420411402. Its totient is φ = 420411400.

The previous prime is 420411371. The next prime is 420411413. The reversal of 420411401 is 104114024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415344400 + 5067001 = 20380^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 420411401 - 2⁶ = 420411337 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420411401.

It is not a weakly prime, because it can be changed into another prime (420411421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210205700 + 210205701.

It is an arithmetic number, because the mean of its divisors is an integer number (210205701).

Almost surely, 2^420411401 is an apocalyptic number.

It is an amenable number.

420411401 is a deficient number, since it is larger than the sum of its proper divisors (1).

420411401 is an equidigital number, since it uses as much as digits as its factorization.

420411401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 420411401 is about 20503.9362318556. The cubic root of 420411401 is about 749.1316771493.

Adding to 420411401 its reverse (104114024), we get a palindrome (524525425).

The spelling of 420411401 in words is "four hundred twenty million, four hundred eleven thousand, four hundred one".