420003243 has 24 divisors (see below), whose sum is σ = 679716336. Its totient is φ = 247665600.

The previous prime is 420003223. The next prime is 420003251. The reversal of 420003243 is 342300024.

420003243 is a `hidden beast` number, since 420 + 0 + 0 + 3 + 243 = 666.

It is not a de Polignac number, because 420003243 - 2⁶ = 420003179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420003223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53668 + ... + 60993.

It is an arithmetic number, because the mean of its divisors is an integer number (28321514).

Almost surely, 2^420003243 is an apocalyptic number.

420003243 is a deficient number, since it is larger than the sum of its proper divisors (259713093).

420003243 is a wasteful number, since it uses less digits than its factorization.

420003243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114715 (or 114712 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420003243 is about 20493.9806528649. The cubic root of 420003243 is about 748.8891662100.

Adding to 420003243 its reverse (342300024), we get a palindrome (762303267).

The spelling of 420003243 in words is "four hundred twenty million, three thousand, two hundred forty-three".