420747559 has 4 divisors (see below), whose sum is σ = 420973360. Its totient is φ = 420521760.

The previous prime is 420747553. The next prime is 420747577. The reversal of 420747559 is 955747024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420747559 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 (420747553) 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, 110082 + ... + 113839.

It is an arithmetic number, because the mean of its divisors is an integer number (105243340).

Almost surely, 2^420747559 is an apocalyptic number.

420747559 is a deficient number, since it is larger than the sum of its proper divisors (225801).

420747559 is a wasteful number, since it uses less digits than its factorization.

420747559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225800.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 420747559 is about 20512.1319954801. The cubic root of 420747559 is about 749.3312907626.

The spelling of 420747559 in words is "four hundred twenty million, seven hundred forty-seven thousand, five hundred fifty-nine".