142899855 has 64 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 61070976.

The previous prime is 142899853. The next prime is 142899859. The reversal of 142899855 is 558998241.

It is not a de Polignac number, because 142899855 - 2¹ = 142899853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142899798 and 142899807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142899853) 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 63 ways as a sum of consecutive naturals, for example, 165154 + ... + 166016.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^142899855 is an apocalyptic number.

142899855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142899855 is a deficient number, since it is larger than the sum of its proper divisors (135791985).

142899855 is a wasteful number, since it uses less digits than its factorization.

142899855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its digits is 1036800, while the sum is 51.

The square root of 142899855 is about 11954.0727369378. The cubic root of 142899855 is about 522.8100523127.

The spelling of 142899855 in words is "one hundred forty-two million, eight hundred ninety-nine thousand, eight hundred fifty-five".