142009787 has 2 divisors, whose sum is σ = 142009788. Its totient is φ = 142009786.

The previous prime is 142009757. The next prime is 142009807. The reversal of 142009787 is 787900241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142009787 - 2¹² = 142005691 is a prime.

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 142009787.

It is not a weakly prime, because it can be changed into another prime (142009717) 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, 71004893 + 71004894.

It is an arithmetic number, because the mean of its divisors is an integer number (71004894).

Almost surely, 2^142009787 is an apocalyptic number.

142009787 is a deficient number, since it is larger than the sum of its proper divisors (1).

142009787 is an equidigital number, since it uses as much as digits as its factorization.

142009787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 142009787 is about 11916.7859341351. The cubic root of 142009787 is about 521.7223302188.

The spelling of 142009787 in words is "one hundred forty-two million, nine thousand, seven hundred eighty-seven".