7718342 has 4 divisors (see below), whose sum is σ = 11577516. Its totient is φ = 3859170.

The previous prime is 7718341. The next prime is 7718369. The reversal of 7718342 is 2438177.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 7718299 and 7718308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7718341) 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 as a sum of consecutive naturals, namely, 1929584 + ... + 1929587.

It is an arithmetic number, because the mean of its divisors is an integer number (2894379).

Almost surely, 2^7718342 is an apocalyptic number.

7718342 is a deficient number, since it is larger than the sum of its proper divisors (3859174).

7718342 is a wasteful number, since it uses less digits than its factorization.

7718342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859173.

The product of its digits is 9408, while the sum is 32.

The square root of 7718342 is about 2778.1904182399. The cubic root of 7718342 is about 197.6247526729.

The spelling of 7718342 in words is "seven million, seven hundred eighteen thousand, three hundred forty-two".