It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-420562573 is a prime.
It is a Duffinian number.
It is a congruent number.
It is a 8598-hyperperfect number.
Almost surely, 2420562573 is an apocalyptic number.
It is an amenable number.
420562573 is a wasteful number, since it uses less digits than its factorization.
420562573 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48914.
The square root of 420562573 is about 20507.6223146419. The cubic root of 420562573 is about 749.2214575901.
The spelling of 420562573 in words is "four hundred twenty million, five hundred sixty-two thousand, five hundred seventy-three".