420331559 has 4 divisors (see below), whose sum is σ = 422679960. Its totient is φ = 417983160.

The previous prime is 420331537. The next prime is 420331589. The reversal of 420331559 is 955133024.

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

It is a cyclic number.

It is not a de Polignac number, because 420331559 - 2¹² = 420327463 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 (420331589) 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, 1173932 + ... + 1174289.

It is an arithmetic number, because the mean of its divisors is an integer number (105669990).

Almost surely, 2^420331559 is an apocalyptic number.

420331559 is a deficient number, since it is larger than the sum of its proper divisors (2348401).

420331559 is a wasteful number, since it uses less digits than its factorization.

420331559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348400.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 420331559 is about 20501.9891473974. The cubic root of 420331559 is about 749.0842506221.

The spelling of 420331559 in words is "four hundred twenty million, three hundred thirty-one thousand, five hundred fifty-nine".