400143412243 has 4 divisors (see below), whose sum is σ = 423681260040. Its totient is φ = 376605564448.

The previous prime is 400143412223. The next prime is 400143412289. The reversal of 400143412243 is 342214341004.

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 400143412243 - 2¹³ = 400143404051 is a prime.

It is a super-2 number, since 2×400143412243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400143412223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11768923873 + ... + 11768923906.

It is an arithmetic number, because the mean of its divisors is an integer number (105920315010).

Almost surely, 2^400143412243 is an apocalyptic number.

400143412243 is a deficient number, since it is larger than the sum of its proper divisors (23537847797).

400143412243 is a wasteful number, since it uses less digits than its factorization.

400143412243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23537847796.

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

Adding to 400143412243 its reverse (342214341004), we get a palindrome (742357753247).

The spelling of 400143412243 in words is "four hundred billion, one hundred forty-three million, four hundred twelve thousand, two hundred forty-three".