400042203 has 16 divisors (see below), whose sum is σ = 585792000. Its totient is φ = 240819680.

The previous prime is 400042189. The next prime is 400042213. The reversal of 400042203 is 302240004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400042203 - 2⁸ = 400041947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400042213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35763 + ... + 45596.

It is an arithmetic number, because the mean of its divisors is an integer number (36612000).

Almost surely, 2^400042203 is an apocalyptic number.

400042203 is a deficient number, since it is larger than the sum of its proper divisors (185749797).

400042203 is a wasteful number, since it uses less digits than its factorization.

400042203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81522.

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

The square root of 400042203 is about 20001.0550471719. The cubic root of 400042203 is about 736.8322116804.

Adding to 400042203 its reverse (302240004), we get a palindrome (702282207).

The spelling of 400042203 in words is "four hundred million, forty-two thousand, two hundred three".