8398142 has 4 divisors (see below), whose sum is σ = 12597216. Its totient is φ = 4199070.

The previous prime is 8398141. The next prime is 8398147. The reversal of 8398142 is 2418938.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2418938 = 2 ⋅1209469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099534 + ... + 2099537.

It is an arithmetic number, because the mean of its divisors is an integer number (3149304).

Almost surely, 2^8398142 is an apocalyptic number.

8398142 is a deficient number, since it is larger than the sum of its proper divisors (4199074).

8398142 is a wasteful number, since it uses less digits than its factorization.

8398142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199073.

The product of its digits is 13824, while the sum is 35.

The square root of 8398142 is about 2897.9547960588. The cubic root of 8398142 is about 203.2642824448.

The spelling of 8398142 in words is "eight million, three hundred ninety-eight thousand, one hundred forty-two".