142147999 has 8 divisors (see below), whose sum is σ = 172011168. Its totient is φ = 114673920.

The previous prime is 142147979. The next prime is 142148021. The reversal of 142147999 is 999741241.

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

It is a cyclic number.

It is not a de Polignac number, because 142147999 - 2⁷ = 142147871 is a prime.

It is a super-3 number, since 3×142147999³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142147979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597142 + ... + 597379.

It is an arithmetic number, because the mean of its divisors is an integer number (21501396).

Almost surely, 2^142147999 is an apocalyptic number.

142147999 is a deficient number, since it is larger than the sum of its proper divisors (29863169).

142147999 is a wasteful number, since it uses less digits than its factorization.

142147999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194545.

The product of its digits is 163296, while the sum is 46.

The square root of 142147999 is about 11922.5835706863. The cubic root of 142147999 is about 521.8915319515.

The spelling of 142147999 in words is "one hundred forty-two million, one hundred forty-seven thousand, nine hundred ninety-nine".