4200423 has 4 divisors (see below), whose sum is σ = 5600568. Its totient is φ = 2800280.

The previous prime is 4200419. The next prime is 4200433. The reversal of 4200423 is 3240024.

It is a happy number.

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 4200423 - 2² = 4200419 is a prime.

It is a D-number.

4200423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700068 + ... + 700073.

It is an arithmetic number, because the mean of its divisors is an integer number (1400142).

Almost surely, 2^4200423 is an apocalyptic number.

4200423 is a deficient number, since it is larger than the sum of its proper divisors (1400145).

4200423 is a wasteful number, since it uses less digits than its factorization.

4200423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400144.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4200423 is about 2049.4933520263. The cubic root of 4200423 is about 161.3482809311.

Adding to 4200423 its reverse (3240024), we get a palindrome (7440447).

The spelling of 4200423 in words is "four million, two hundred thousand, four hundred twenty-three".