420273433 has 2 divisors, whose sum is σ = 420273434. Its totient is φ = 420273432.

The previous prime is 420273421. The next prime is 420273449. The reversal of 420273433 is 334372024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373378329 + 46895104 = 19323^2 + 6848^2 .

It is a cyclic number.

It is not a de Polignac number, because 420273433 - 2²¹ = 418176281 is a prime.

It is equal to p_22358224 and since 420273433 and 22358224 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420273533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210136716 + 210136717.

It is an arithmetic number, because the mean of its divisors is an integer number (210136717).

Almost surely, 2^420273433 is an apocalyptic number.

It is an amenable number.

420273433 is a deficient number, since it is larger than the sum of its proper divisors (1).

420273433 is an equidigital number, since it uses as much as digits as its factorization.

420273433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 28.

The square root of 420273433 is about 20500.5715286184. The cubic root of 420273433 is about 749.0497197243.

The spelling of 420273433 in words is "four hundred twenty million, two hundred seventy-three thousand, four hundred thirty-three".