140143013 has 4 divisors (see below), whose sum is σ = 143930700. Its totient is φ = 136355328.

The previous prime is 140143007. The next prime is 140143039. The reversal of 140143013 is 310341041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310341041 = 19 ⋅16333739.

It can be written as a sum of positive squares in 2 ways, for example, as 134606404 + 5536609 = 11602^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 140143013 - 2⁸ = 140142757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140142982 and 140143000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140143813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893788 + ... + 1893861.

It is an arithmetic number, because the mean of its divisors is an integer number (35982675).

Almost surely, 2^140143013 is an apocalyptic number.

It is an amenable number.

140143013 is a deficient number, since it is larger than the sum of its proper divisors (3787687).

140143013 is an equidigital number, since it uses as much as digits as its factorization.

140143013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787686.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 140143013 is about 11838.2014258924. The cubic root of 140143013 is about 519.4261581479.

Adding to 140143013 its reverse (310341041), we get a palindrome (450484054).

The spelling of 140143013 in words is "one hundred forty million, one hundred forty-three thousand, thirteen".