7242509 has 8 divisors (see below), whose sum is σ = 7387200. Its totient is φ = 7099456.

The previous prime is 7242481. The next prime is 7242511. The reversal of 7242509 is 9052427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7242509 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 (7242569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11792 + ... + 12390.

It is an arithmetic number, because the mean of its divisors is an integer number (923400).

Almost surely, 2^7242509 is an apocalyptic number.

It is an amenable number.

7242509 is a deficient number, since it is larger than the sum of its proper divisors (144691).

7242509 is a wasteful number, since it uses less digits than its factorization.

7242509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 7242509 is about 2691.1910002822. The cubic root of 7242509 is about 193.4771498945.

The spelling of 7242509 in words is "seven million, two hundred forty-two thousand, five hundred nine".