12320541 has 24 divisors (see below), whose sum is σ = 18430776. Its totient is φ = 7925760.

The previous prime is 12320507. The next prime is 12320549. The reversal of 12320541 is 14502321.

12320541 is a `hidden beast` number, since 123 + 2 + 0 + 541 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 562500 + 11758041 = 750^2 + 3429^2 .

It is not a de Polignac number, because 12320541 - 2²³ = 3931933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63741 + ... + 63933.

It is an arithmetic number, because the mean of its divisors is an integer number (767949).

Almost surely, 2^12320541 is an apocalyptic number.

It is an amenable number.

12320541 is a deficient number, since it is larger than the sum of its proper divisors (6110235).

12320541 is a wasteful number, since it uses less digits than its factorization.

12320541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12320541 is about 3510.0628199507. The cubic root of 12320541 is about 230.9634506744.

Adding to 12320541 its reverse (14502321), we get a palindrome (26822862).

The spelling of 12320541 in words is "twelve million, three hundred twenty thousand, five hundred forty-one".