420562573 has 4 divisors (see below), whose sum is σ = 420611488. Its totient is φ = 420513660.

The previous prime is 420562559. The next prime is 420562603. The reversal of 420562573 is 375265024.

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 2^k-420562573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420562073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7761 + ... + 30022.

It is an arithmetic number, because the mean of its divisors is an integer number (105152872).

It is a 8598-hyperperfect number.

Almost surely, 2^420562573 is an apocalyptic number.

It is an amenable number.

420562573 is a deficient number, since it is larger than the sum of its proper divisors (48915).

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 product of its (nonzero) digits is 50400, while the sum is 34.

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".