420565373 has 4 divisors (see below), whose sum is σ = 438850848. Its totient is φ = 402279900.

The previous prime is 420565367. The next prime is 420565417. The reversal of 420565373 is 373565024.

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.

It is a cyclic number.

It is not a de Polignac number, because 420565373 - 2⁴ = 420565357 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 (420565573) 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, 9142703 + ... + 9142748.

It is an arithmetic number, because the mean of its divisors is an integer number (109712712).

Almost surely, 2^420565373 is an apocalyptic number.

It is an amenable number.

420565373 is a deficient number, since it is larger than the sum of its proper divisors (18285475).

420565373 is a wasteful number, since it uses less digits than its factorization.

420565373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285474.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 420565373 is about 20507.6905818281. The cubic root of 420565373 is about 749.2231202958.

The spelling of 420565373 in words is "four hundred twenty million, five hundred sixty-five thousand, three hundred seventy-three".