142878593 has 16 divisors (see below), whose sum is σ = 170169216. Its totient is φ = 118247040.

The previous prime is 142878587. The next prime is 142878601. The reversal of 142878593 is 395878241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142878593 - 2⁴ = 142878577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142878503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3596 + ... + 17282.

It is an arithmetic number, because the mean of its divisors is an integer number (10635576).

Almost surely, 2^142878593 is an apocalyptic number.

142878593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142878593 is a deficient number, since it is larger than the sum of its proper divisors (27290623).

142878593 is a wasteful number, since it uses less digits than its factorization.

142878593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784.

The product of its digits is 483840, while the sum is 47.

The square root of 142878593 is about 11953.1833835175. The cubic root of 142878593 is about 522.7841214754.

The spelling of 142878593 in words is "one hundred forty-two million, eight hundred seventy-eight thousand, five hundred ninety-three".