7427542 has 4 divisors (see below), whose sum is σ = 11141316. Its totient is φ = 3713770.

The previous prime is 7427533. The next prime is 7427561. The reversal of 7427542 is 2457247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2457247 = 13 ⋅189019.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 1856884 + ... + 1856887.

It is an arithmetic number, because the mean of its divisors is an integer number (2785329).

Almost surely, 2^7427542 is an apocalyptic number.

7427542 is a deficient number, since it is larger than the sum of its proper divisors (3713774).

7427542 is a wasteful number, since it uses less digits than its factorization.

7427542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713773.

The product of its digits is 15680, while the sum is 31.

The square root of 7427542 is about 2725.3517204207. The cubic root of 7427542 is about 195.1109778105.

The spelling of 7427542 in words is "seven million, four hundred twenty-seven thousand, five hundred forty-two".