420328243 has 8 divisors (see below), whose sum is σ = 438808608. Its totient is φ = 401865024.

The previous prime is 420328231. The next prime is 420328253. The reversal of 420328243 is 342823024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420328243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420328253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95671 + ... + 99967.

It is an arithmetic number, because the mean of its divisors is an integer number (54851076).

Almost surely, 2^420328243 is an apocalyptic number.

420328243 is a deficient number, since it is larger than the sum of its proper divisors (18480365).

420328243 is a wasteful number, since it uses less digits than its factorization.

420328243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 420328243 is about 20501.9082770361. The cubic root of 420328243 is about 749.0822807725.

The spelling of 420328243 in words is "four hundred twenty million, three hundred twenty-eight thousand, two hundred forty-three".