2140430987 has 2 divisors, whose sum is σ = 2140430988. Its totient is φ = 2140430986.

The previous prime is 2140430911. The next prime is 2140430989. The reversal of 2140430987 is 7890340412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2140430987 - 2¹² = 2140426891 is a prime.

Together with 2140430989, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140430987.

It is not a weakly prime, because it can be changed into another prime (2140430989) 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, 1070215493 + 1070215494.

It is an arithmetic number, because the mean of its divisors is an integer number (1070215494).

Almost surely, 2^2140430987 is an apocalyptic number.

2140430987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140430987 is an equidigital number, since it uses as much as digits as its factorization.

2140430987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2140430987 is about 46264.7920885850. The cubic root of 2140430987 is about 1288.7452468855.

The spelling of 2140430987 in words is "two billion, one hundred forty million, four hundred thirty thousand, nine hundred eighty-seven".