142786923 has 8 divisors (see below), whose sum is σ = 196947600. Its totient is φ = 91908768.

The previous prime is 142786871. The next prime is 142786933. The reversal of 142786923 is 329687241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142786923 - 2⁹ = 142786411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142786933) 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 in 7 ways as a sum of consecutive naturals, for example, 820528 + ... + 820701.

It is an arithmetic number, because the mean of its divisors is an integer number (24618450).

Almost surely, 2^142786923 is an apocalyptic number.

142786923 is a deficient number, since it is larger than the sum of its proper divisors (54160677).

142786923 is a wasteful number, since it uses less digits than its factorization.

142786923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641261.

The product of its digits is 145152, while the sum is 42.

The square root of 142786923 is about 11949.3482249033. The cubic root of 142786923 is about 522.6722925624.

The spelling of 142786923 in words is "one hundred forty-two million, seven hundred eighty-six thousand, nine hundred twenty-three".