420537433 has 2 divisors, whose sum is σ = 420537434. Its totient is φ = 420537432.

The previous prime is 420537419. The next prime is 420537479. The reversal of 420537433 is 334735024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388365849 + 32171584 = 19707^2 + 5672^2 .

It is a cyclic number.

It is not a de Polignac number, because 420537433 - 2⁵ = 420537401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420537395 and 420537404.

It is not a weakly prime, because it can be changed into another prime (424537433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210268716 + 210268717.

It is an arithmetic number, because the mean of its divisors is an integer number (210268717).

Almost surely, 2^420537433 is an apocalyptic number.

It is an amenable number.

420537433 is a deficient number, since it is larger than the sum of its proper divisors (1).

420537433 is an equidigital number, since it uses as much as digits as its factorization.

420537433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 31.

The square root of 420537433 is about 20507.0093626545. The cubic root of 420537433 is about 749.2065285371.

The spelling of 420537433 in words is "four hundred twenty million, five hundred thirty-seven thousand, four hundred thirty-three".