142088865 has 16 divisors (see below), whose sum is σ = 229004928. Its totient is φ = 75226496.

The previous prime is 142088861. The next prime is 142088929. The reversal of 142088865 is 568880241.

It is a cyclic number.

It is not a de Polignac number, because 142088865 - 2² = 142088861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142088861) 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, 32517 + ... + 36626.

It is an arithmetic number, because the mean of its divisors is an integer number (14312808).

Almost surely, 2^142088865 is an apocalyptic number.

142088865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142088865 is a deficient number, since it is larger than the sum of its proper divisors (86916063).

142088865 is a wasteful number, since it uses less digits than its factorization.

142088865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69288.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 142088865 is about 11920.1033972026. The cubic root of 142088865 is about 521.8191524255.

The spelling of 142088865 in words is "one hundred forty-two million, eighty-eight thousand, eight hundred sixty-five".