142798 has 4 divisors (see below), whose sum is σ = 214200. Its totient is φ = 71398.

The previous prime is 142789. The next prime is 142799. The reversal of 142798 is 897241.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35698 + ... + 35701.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2¹⁴²⁷⁹⁸ is an apocalyptic number.

142798 is a deficient number, since it is larger than the sum of its proper divisors (71402).

142798 is an equidigital number, since it uses as much as digits as its factorization.

142798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71401.

The product of its digits is 4032, while the sum is 31.

The square root of 142798 is about 377.8862262639. The cubic root of 142798 is about 52.2685808019.

The spelling of 142798 in words is "one hundred forty-two thousand, seven hundred ninety-eight".