11427145 has 8 divisors (see below), whose sum is σ = 14519304. Its totient is φ = 8603904.

The previous prime is 11427139. The next prime is 11427149. The reversal of 11427145 is 54172411.

It can be written as a sum of positive squares in 4 ways, for example, as 3316041 + 8111104 = 1821^2 + 2848^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11427145 - 2³ = 11427137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11427149) 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 7 ways as a sum of consecutive naturals, for example, 67134 + ... + 67303.

It is an arithmetic number, because the mean of its divisors is an integer number (1814913).

Almost surely, 2^11427145 is an apocalyptic number.

It is an amenable number.

11427145 is a deficient number, since it is larger than the sum of its proper divisors (3092159).

11427145 is a wasteful number, since it uses less digits than its factorization.

11427145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134459.

The product of its digits is 1120, while the sum is 25.

The square root of 11427145 is about 3380.4060406998. The cubic root of 11427145 is about 225.2402043779.

Adding to 11427145 its reverse (54172411), we get a palindrome (65599556).

The spelling of 11427145 in words is "eleven million, four hundred twenty-seven thousand, one hundred forty-five".