420420053 has 2 divisors, whose sum is σ = 420420054. Its totient is φ = 420420052.

The previous prime is 420420043. The next prime is 420420061. The reversal of 420420053 is 350024024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266113969 + 154306084 = 16313^2 + 12422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420420053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420420043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210210026 + 210210027.

It is an arithmetic number, because the mean of its divisors is an integer number (210210027).

Almost surely, 2^420420053 is an apocalyptic number.

It is an amenable number.

420420053 is a deficient number, since it is larger than the sum of its proper divisors (1).

420420053 is an equidigital number, since it uses as much as digits as its factorization.

420420053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 420420053 is about 20504.1472146490. The cubic root of 420420053 is about 749.1368161178.

Adding to 420420053 its reverse (350024024), we get a palindrome (770444077).

The spelling of 420420053 in words is "four hundred twenty million, four hundred twenty thousand, fifty-three".