7318742 has 4 divisors (see below), whose sum is σ = 10978116. Its totient is φ = 3659370.

The previous prime is 7318739. The next prime is 7318757. The reversal of 7318742 is 2478137.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2478137 = 29 ⋅85453.

It is a junction number, because it is equal to n+sod(n) for n = 7318699 and 7318708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1829684 + ... + 1829687.

It is an arithmetic number, because the mean of its divisors is an integer number (2744529).

Almost surely, 2^7318742 is an apocalyptic number.

7318742 is a deficient number, since it is larger than the sum of its proper divisors (3659374).

7318742 is a wasteful number, since it uses less digits than its factorization.

7318742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659373.

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

The square root of 7318742 is about 2705.3173566146. The cubic root of 7318742 is about 194.1536141172.

The spelling of 7318742 in words is "seven million, three hundred eighteen thousand, seven hundred forty-two".