140242787 has 2 divisors, whose sum is σ = 140242788. Its totient is φ = 140242786.

The previous prime is 140242777. The next prime is 140242793. The reversal of 140242787 is 787242041.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (787242041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140242787 - 2²⁶ = 73133923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140242747) 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, 70121393 + 70121394.

It is an arithmetic number, because the mean of its divisors is an integer number (70121394).

Almost surely, 2^140242787 is an apocalyptic number.

140242787 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242787 is an equidigital number, since it uses as much as digits as its factorization.

140242787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 140242787 is about 11842.4147453127. The cubic root of 140242787 is about 519.5493963800.

The spelling of 140242787 in words is "one hundred forty million, two hundred forty-two thousand, seven hundred eighty-seven".