142138486 has 16 divisors (see below), whose sum is σ = 243855360. Its totient is φ = 60869160.

The previous prime is 142138471. The next prime is 142138501. The reversal of 142138486 is 684831241.

It is an interprime number because it is at equal distance from previous prime (142138471) and next prime (142138501).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19531 + ... + 25801.

It is an arithmetic number, because the mean of its divisors is an integer number (15240960).

Almost surely, 2^142138486 is an apocalyptic number.

142138486 is a deficient number, since it is larger than the sum of its proper divisors (101716874).

142138486 is a wasteful number, since it uses less digits than its factorization.

142138486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899.

The product of its digits is 36864, while the sum is 37.

The square root of 142138486 is about 11922.1846152456. The cubic root of 142138486 is about 521.8798894734.

The spelling of 142138486 in words is "one hundred forty-two million, one hundred thirty-eight thousand, four hundred eighty-six".