8042247 has 20 divisors (see below), whose sum is σ = 12298440. Its totient is φ = 5234544.

The previous prime is 8042239. The next prime is 8042267. The reversal of 8042247 is 7422408.

It is not a de Polignac number, because 8042247 - 2³ = 8042239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 8042247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042267) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2329 + ... + 4637.

It is an arithmetic number, because the mean of its divisors is an integer number (614922).

Almost surely, 2^8042247 is an apocalyptic number.

8042247 is a deficient number, since it is larger than the sum of its proper divisors (4256193).

8042247 is a wasteful number, since it uses less digits than its factorization.

8042247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2355 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 8042247 is about 2835.8855759709. The cubic root of 8042247 is about 200.3514404198.

The spelling of 8042247 in words is "eight million, forty-two thousand, two hundred forty-seven".