7242639 has 16 divisors (see below), whose sum is σ = 10068480. Its totient is φ = 4626720.

The previous prime is 7242637. The next prime is 7242643. The reversal of 7242639 is 9362427.

It is not a de Polignac number, because 7242639 - 2¹ = 7242637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242637) 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 15 ways as a sum of consecutive naturals, for example, 7422 + ... + 8340.

It is an arithmetic number, because the mean of its divisors is an integer number (629280).

Almost surely, 2^7242639 is an apocalyptic number.

7242639 is a deficient number, since it is larger than the sum of its proper divisors (2825841).

7242639 is a wasteful number, since it uses less digits than its factorization.

7242639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its digits is 18144, while the sum is 33.

The square root of 7242639 is about 2691.2151530489. The cubic root of 7242639 is about 193.4783074989.

The spelling of 7242639 in words is "seven million, two hundred forty-two thousand, six hundred thirty-nine".