140001143 has 4 divisors (see below), whose sum is σ = 142642728. Its totient is φ = 137359560.

The previous prime is 140001133. The next prime is 140001187. The reversal of 140001143 is 341100041.

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 140001143 - 2¹⁸ = 139738999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140001133) 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, 1320713 + ... + 1320818.

It is an arithmetic number, because the mean of its divisors is an integer number (35660682).

Almost surely, 2^140001143 is an apocalyptic number.

140001143 is a deficient number, since it is larger than the sum of its proper divisors (2641585).

140001143 is an equidigital number, since it uses as much as digits as its factorization.

140001143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641584.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 140001143 is about 11832.2078666663. The cubic root of 140001143 is about 519.2508232814.

Adding to 140001143 its reverse (341100041), we get a palindrome (481101184).

The spelling of 140001143 in words is "one hundred forty million, one thousand, one hundred forty-three".