798142 has 4 divisors (see below), whose sum is σ = 1197216. Its totient is φ = 399070.

The previous prime is 798139. The next prime is 798143. The reversal of 798142 is 241897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241897 = 71 ⋅3407.

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 an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199534 + ... + 199537.

It is an arithmetic number, because the mean of its divisors is an integer number (299304).

2⁷⁹⁸¹⁴² is an apocalyptic number.

798142 is a deficient number, since it is larger than the sum of its proper divisors (399074).

798142 is a wasteful number, since it uses less digits than its factorization.

798142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399073.

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

The square root of 798142 is about 893.3879336548. The cubic root of 798142 is about 92.7598536960.

The spelling of 798142 in words is "seven hundred ninety-eight thousand, one hundred forty-two".