12040511 has 8 divisors (see below), whose sum is σ = 14096544. Its totient is φ = 10068480.

The previous prime is 12040463. The next prime is 12040517. The reversal of 12040511 is 11504021.

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

It is a cyclic number.

It is not a de Polignac number, because 12040511 - 2¹⁰ = 12039487 is a prime.

It is a super-2 number, since 2×12040511² = 289947810282242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20690 + ... + 21263.

It is an arithmetic number, because the mean of its divisors is an integer number (1762068).

Almost surely, 2^12040511 is an apocalyptic number.

12040511 is a deficient number, since it is larger than the sum of its proper divisors (2056033).

12040511 is an equidigital number, since it uses as much as digits as its factorization.

12040511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42001.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12040511 is about 3469.9439476741. The cubic root of 12040511 is about 229.2001897993.

Adding to 12040511 its reverse (11504021), we get a palindrome (23544532).

The spelling of 12040511 in words is "twelve million, forty thousand, five hundred eleven".