140002543987 has 2 divisors, whose sum is σ = 140002543988. Its totient is φ = 140002543986.

The previous prime is 140002543951. The next prime is 140002543997. The reversal of 140002543987 is 789345200041.

It is a strong prime.

It is an emirp because it is prime and its reverse (789345200041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140002543987 - 2¹⁵ = 140002511219 is a prime.

It is not a weakly prime, because it can be changed into another prime (140002543927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70001271993 + 70001271994.

It is an arithmetic number, because the mean of its divisors is an integer number (70001271994).

Almost surely, 2^140002543987 is an apocalyptic number.

140002543987 is a deficient number, since it is larger than the sum of its proper divisors (1).

140002543987 is an equidigital number, since it uses as much as digits as its factorization.

140002543987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 140002543987 in words is "one hundred forty billion, two million, five hundred forty-three thousand, nine hundred eighty-seven".