401142143 has 2 divisors, whose sum is σ = 401142144. Its totient is φ = 401142142.

The previous prime is 401142109. The next prime is 401142167. The reversal of 401142143 is 341241104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401142143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401147143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200571071 + 200571072.

It is an arithmetic number, because the mean of its divisors is an integer number (200571072).

Almost surely, 2^401142143 is an apocalyptic number.

401142143 is a deficient number, since it is larger than the sum of its proper divisors (1).

401142143 is an equidigital number, since it uses as much as digits as its factorization.

401142143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 401142143 is about 20028.5332213819. The cubic root of 401142143 is about 737.5069151128.

Adding to 401142143 its reverse (341241104), we get a palindrome (742383247).

The spelling of 401142143 in words is "four hundred one million, one hundred forty-two thousand, one hundred forty-three".