420024901 has 2 divisors, whose sum is σ = 420024902. Its totient is φ = 420024900.

The previous prime is 420024889. The next prime is 420024911. The reversal of 420024901 is 109420024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401962401 + 18062500 = 20049^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 420024901 - 2²¹ = 417927749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420024911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210012450 + 210012451.

It is an arithmetic number, because the mean of its divisors is an integer number (210012451).

Almost surely, 2^420024901 is an apocalyptic number.

It is an amenable number.

420024901 is a deficient number, since it is larger than the sum of its proper divisors (1).

420024901 is an equidigital number, since it uses as much as digits as its factorization.

420024901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 420024901 is about 20494.5090451077. The cubic root of 420024901 is about 748.9020384620.

Adding to 420024901 its reverse (109420024), we get a palindrome (529444925).

The spelling of 420024901 in words is "four hundred twenty million, twenty-four thousand, nine hundred one".