420798253 has 2 divisors, whose sum is σ = 420798254. Its totient is φ = 420798252.

The previous prime is 420798241. The next prime is 420798281. The reversal of 420798253 is 352897024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311240164 + 109558089 = 17642^2 + 10467^2 .

It is a cyclic number.

It is not a de Polignac number, because 420798253 - 2⁵ = 420798221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420798223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210399126 + 210399127.

It is an arithmetic number, because the mean of its divisors is an integer number (210399127).

Almost surely, 2^420798253 is an apocalyptic number.

It is an amenable number.

420798253 is a deficient number, since it is larger than the sum of its proper divisors (1).

420798253 is an equidigital number, since it uses as much as digits as its factorization.

420798253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 420798253 is about 20513.3676659880. The cubic root of 420798253 is about 749.3613840843.

The spelling of 420798253 in words is "four hundred twenty million, seven hundred ninety-eight thousand, two hundred fifty-three".