142057687 has 2 divisors, whose sum is σ = 142057688. Its totient is φ = 142057686.

The previous prime is 142057679. The next prime is 142057693. The reversal of 142057687 is 786750241.

It is a strong prime.

It is an emirp because it is prime and its reverse (786750241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142057687 - 2³ = 142057679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142057607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71028843 + 71028844.

It is an arithmetic number, because the mean of its divisors is an integer number (71028844).

Almost surely, 2^142057687 is an apocalyptic number.

142057687 is a deficient number, since it is larger than the sum of its proper divisors (1).

142057687 is an equidigital number, since it uses as much as digits as its factorization.

142057687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 142057687 is about 11918.7955347845. The cubic root of 142057687 is about 521.7809827265.

The spelling of 142057687 in words is "one hundred forty-two million, fifty-seven thousand, six hundred eighty-seven".