4200643 has 4 divisors (see below), whose sum is σ = 4269568. Its totient is φ = 4131720.

The previous prime is 4200629. The next prime is 4200661. The reversal of 4200643 is 3460024.

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 4200643 - 2⁵ = 4200611 is a prime.

It is a super-2 number, since 2×4200643² = 35290803226898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4200643.

It is not an unprimeable number, because it can be changed into a prime (4200043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34371 + ... + 34492.

It is an arithmetic number, because the mean of its divisors is an integer number (1067392).

Almost surely, 2^4200643 is an apocalyptic number.

4200643 is a deficient number, since it is larger than the sum of its proper divisors (68925).

4200643 is an equidigital number, since it uses as much as digits as its factorization.

4200643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68924.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 4200643 is about 2049.5470231249. The cubic root of 4200643 is about 161.3510977904.

Adding to 4200643 its reverse (3460024), we get a palindrome (7660667).

The spelling of 4200643 in words is "four million, two hundred thousand, six hundred forty-three".