7242647 has 4 divisors (see below), whose sum is σ = 7248120. Its totient is φ = 7237176.

The previous prime is 7242643. The next prime is 7242649. The reversal of 7242647 is 7462427.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7242647 - 2² = 7242643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629 + ... + 3857.

It is an arithmetic number, because the mean of its divisors is an integer number (1812030).

Almost surely, 2^7242647 is an apocalyptic number.

7242647 is a deficient number, since it is larger than the sum of its proper divisors (5473).

7242647 is a wasteful number, since it uses less digits than its factorization.

7242647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472.

The product of its digits is 18816, while the sum is 32.

The square root of 7242647 is about 2691.2166393659. The cubic root of 7242647 is about 193.4783787356.

The spelling of 7242647 in words is "seven million, two hundred forty-two thousand, six hundred forty-seven".