142659887 has 2 divisors, whose sum is σ = 142659888. Its totient is φ = 142659886.

The previous prime is 142659877. The next prime is 142659893. The reversal of 142659887 is 788956241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142659887 - 2⁴ = 142659871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142659877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71329943 + 71329944.

It is an arithmetic number, because the mean of its divisors is an integer number (71329944).

Almost surely, 2^142659887 is an apocalyptic number.

142659887 is a deficient number, since it is larger than the sum of its proper divisors (1).

142659887 is an equidigital number, since it uses as much as digits as its factorization.

142659887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 142659887 is about 11944.0314383377. The cubic root of 142659887 is about 522.5172412525.

The spelling of 142659887 in words is "one hundred forty-two million, six hundred fifty-nine thousand, eight hundred eighty-seven".