40242404143 has 2 divisors, whose sum is σ = 40242404144. Its totient is φ = 40242404142.

The previous prime is 40242404129. The next prime is 40242404171. The reversal of 40242404143 is 34140424204.

It is an a-pointer prime, because the next prime (40242404171) can be obtained adding 40242404143 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40242404143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40242404113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121202071 + 20121202072.

It is an arithmetic number, because the mean of its divisors is an integer number (20121202072).

Almost surely, 2^40242404143 is an apocalyptic number.

40242404143 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242404143 is an equidigital number, since it uses as much as digits as its factorization.

40242404143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40242404143 its reverse (34140424204), we get a palindrome (74382828347).

The spelling of 40242404143 in words is "forty billion, two hundred forty-two million, four hundred four thousand, one hundred forty-three".