7240427 has 4 divisors (see below), whose sum is σ = 7257360. Its totient is φ = 7223496.

The previous prime is 7240411. The next prime is 7240439.

7240427 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7240427 - 2⁴ = 7240411 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 7240396 and 7240405.

It is not an unprimeable number, because it can be changed into a prime (7240447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7808 + ... + 8685.

It is an arithmetic number, because the mean of its divisors is an integer number (1814340).

Almost surely, 2^7240427 is an apocalyptic number.

7240427 is a deficient number, since it is larger than the sum of its proper divisors (16933).

7240427 is a wasteful number, since it uses less digits than its factorization.

7240427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16932.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 7240427 is about 2690.8041548950. The cubic root of 7240427 is about 193.4586085285.

It can be divided in two parts, 7240 and 427, that added together give a palindrome (7667).

The spelling of 7240427 in words is "seven million, two hundred forty thousand, four hundred twenty-seven".