401244143 has 2 divisors, whose sum is σ = 401244144. Its totient is φ = 401244142.

The previous prime is 401244139. The next prime is 401244197. The reversal of 401244143 is 341442104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401244143 - 2² = 401244139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401244443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200622071 + 200622072.

It is an arithmetic number, because the mean of its divisors is an integer number (200622072).

Almost surely, 2^401244143 is an apocalyptic number.

401244143 is a deficient number, since it is larger than the sum of its proper divisors (1).

401244143 is an equidigital number, since it uses as much as digits as its factorization.

401244143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 401244143 is about 20031.0794267309. The cubic root of 401244143 is about 737.5694194159.

Adding to 401244143 its reverse (341442104), we get a palindrome (742686247).

The spelling of 401244143 in words is "four hundred one million, two hundred forty-four thousand, one hundred forty-three".