12090461 has 4 divisors (see below), whose sum is σ = 12102300. Its totient is φ = 12078624.

The previous prime is 12090443. The next prime is 12090487. The reversal of 12090461 is 16409021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16409021 = 59 ⋅278119.

It can be written as a sum of positive squares in 2 ways, for example, as 6661561 + 5428900 = 2581^2 + 2330^2 .

It is a cyclic number.

It is not a de Polignac number, because 12090461 - 2¹⁰ = 12089437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090431) 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, 4226 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (3025575).

Almost surely, 2^12090461 is an apocalyptic number.

It is an amenable number.

12090461 is a deficient number, since it is larger than the sum of its proper divisors (11839).

12090461 is a wasteful number, since it uses less digits than its factorization.

12090461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12090461 is about 3477.1340210006. The cubic root of 12090461 is about 229.5166978071.

Adding to 12090461 its reverse (16409021), we get a palindrome (28499482).

The spelling of 12090461 in words is "twelve million, ninety thousand, four hundred sixty-one".