7540427 has 4 divisors (see below), whose sum is σ = 7546320. Its totient is φ = 7534536.

The previous prime is 7540411. The next prime is 7540439. The reversal of 7540427 is 7240457.

7540427 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7540427 - 2⁴ = 7540411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7540427.

It is not an unprimeable number, because it can be changed into a prime (7540447) 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 3 ways as a sum of consecutive naturals, for example, 128 + ... + 3885.

It is an arithmetic number, because the mean of its divisors is an integer number (1886580).

Almost surely, 2^7540427 is an apocalyptic number.

7540427 is a deficient number, since it is larger than the sum of its proper divisors (5893).

7540427 is a wasteful number, since it uses less digits than its factorization.

7540427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 7540427 is about 2745.9837945625. The cubic root of 7540427 is about 196.0944550289.

The spelling of 7540427 in words is "seven million, five hundred forty thousand, four hundred twenty-seven".