13142687 has 4 divisors (see below), whose sum is σ = 13191456. Its totient is φ = 13093920.

The previous prime is 13142641. The next prime is 13142693. The reversal of 13142687 is 78624131.

13142687 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78624131 = 4657 ⋅16883.

It is a cyclic number.

It is not a de Polignac number, because 13142687 - 2⁸ = 13142431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23978 + ... + 24519.

It is an arithmetic number, because the mean of its divisors is an integer number (3297864).

Almost surely, 2^13142687 is an apocalyptic number.

13142687 is a deficient number, since it is larger than the sum of its proper divisors (48769).

13142687 is an equidigital number, since it uses as much as digits as its factorization.

13142687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48768.

The product of its digits is 8064, while the sum is 32.

The square root of 13142687 is about 3625.2844026366. The cubic root of 13142687 is about 235.9906093649.

The spelling of 13142687 in words is "thirteen million, one hundred forty-two thousand, six hundred eighty-seven".