8142249 has 4 divisors (see below), whose sum is σ = 10856336. Its totient is φ = 5428164.

The previous prime is 8142247. The next prime is 8142271. The reversal of 8142249 is 9422418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8142249 - 2¹ = 8142247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8142247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357039 + ... + 1357044.

It is an arithmetic number, because the mean of its divisors is an integer number (2714084).

Almost surely, 2^8142249 is an apocalyptic number.

It is an amenable number.

8142249 is a deficient number, since it is larger than the sum of its proper divisors (2714087).

8142249 is a wasteful number, since it uses less digits than its factorization.

8142249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714086.

The product of its digits is 4608, while the sum is 30.

The square root of 8142249 is about 2853.4626333632. The cubic root of 8142249 is about 201.1784509619.

The spelling of 8142249 in words is "eight million, one hundred forty-two thousand, two hundred forty-nine".