420559453 has 2 divisors, whose sum is σ = 420559454. Its totient is φ = 420559452.

The previous prime is 420559417. The next prime is 420559499. The reversal of 420559453 is 354955024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397882809 + 22676644 = 19947^2 + 4762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420559453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420559553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210279726 + 210279727.

It is an arithmetic number, because the mean of its divisors is an integer number (210279727).

Almost surely, 2^420559453 is an apocalyptic number.

It is an amenable number.

420559453 is a deficient number, since it is larger than the sum of its proper divisors (1).

420559453 is an equidigital number, since it uses as much as digits as its factorization.

420559453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 420559453 is about 20507.5462452240. The cubic root of 420559453 is about 749.2196048521.

The spelling of 420559453 in words is "four hundred twenty million, five hundred fifty-nine thousand, four hundred fifty-three".