142815885 has 16 divisors (see below), whose sum is σ = 228940800. Its totient is φ = 76023360.

The previous prime is 142815851. The next prime is 142815887. The reversal of 142815885 is 588518241.

It is not a de Polignac number, because 142815885 - 2⁶ = 142815821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142815887) 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 15 ways as a sum of consecutive naturals, for example, 685 + ... + 16914.

It is an arithmetic number, because the mean of its divisors is an integer number (14308800).

Almost surely, 2^142815885 is an apocalyptic number.

142815885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142815885 is a deficient number, since it is larger than the sum of its proper divisors (86124915).

142815885 is a wasteful number, since it uses less digits than its factorization.

142815885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18148.

The product of its digits is 102400, while the sum is 42.

The square root of 142815885 is about 11950.5600287183. The cubic root of 142815885 is about 522.7076286918.

The spelling of 142815885 in words is "one hundred forty-two million, eight hundred fifteen thousand, eight hundred eighty-five".