142750987 has 2 divisors, whose sum is σ = 142750988. Its totient is φ = 142750986.

The previous prime is 142750981. The next prime is 142751003. The reversal of 142750987 is 789057241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142750987 - 2¹¹ = 142748939 is a prime.

It is not a weakly prime, because it can be changed into another prime (142750981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71375493 + 71375494.

It is an arithmetic number, because the mean of its divisors is an integer number (71375494).

Almost surely, 2^142750987 is an apocalyptic number.

142750987 is a deficient number, since it is larger than the sum of its proper divisors (1).

142750987 is an equidigital number, since it uses as much as digits as its factorization.

142750987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 142750987 is about 11947.8444499416. The cubic root of 142750987 is about 522.6284409102.

The spelling of 142750987 in words is "one hundred forty-two million, seven hundred fifty thousand, nine hundred eighty-seven".