142866864 has 120 divisors (see below), whose sum is σ = 459510272. Its totient is φ = 40590720.

The previous prime is 142866859. The next prime is 142866877. The reversal of 142866864 is 468668241.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 272907 + ... + 273429.

Almost surely, 2^142866864 is an apocalyptic number.

142866864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142866864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229755136).

142866864 is an abundant number, since it is smaller than the sum of its proper divisors (316643408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142866864 is a wasteful number, since it uses less digits than its factorization.

142866864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 806 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 142866864 is about 11952.6927510080. The cubic root of 142866864 is about 522.7698158503.

The spelling of 142866864 in words is "one hundred forty-two million, eight hundred sixty-six thousand, eight hundred sixty-four".