142686687 has 32 divisors (see below), whose sum is σ = 233243136. Its totient is φ = 76348800.

The previous prime is 142686673. The next prime is 142686703. The reversal of 142686687 is 786686241.

142686687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142686687 - 2⁴ = 142686671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142686667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2637 + ... + 17097.

It is an arithmetic number, because the mean of its divisors is an integer number (7288848).

Almost surely, 2^142686687 is an apocalyptic number.

142686687 is a deficient number, since it is larger than the sum of its proper divisors (90556449).

142686687 is a wasteful number, since it uses less digits than its factorization.

142686687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14511.

The product of its digits is 774144, while the sum is 48.

The square root of 142686687 is about 11945.1532849102. The cubic root of 142686687 is about 522.5499591280.

The spelling of 142686687 in words is "one hundred forty-two million, six hundred eighty-six thousand, six hundred eighty-seven".