12538743 has 16 divisors (see below), whose sum is σ = 19574016. Its totient is φ = 6989760.

The previous prime is 12538723. The next prime is 12538753. The reversal of 12538743 is 34783521.

It is not a de Polignac number, because 12538743 - 2⁶ = 12538679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538723) 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 15 ways as a sum of consecutive naturals, for example, 6421 + ... + 8142.

It is an arithmetic number, because the mean of its divisors is an integer number (1223376).

Almost surely, 2^12538743 is an apocalyptic number.

12538743 is a deficient number, since it is larger than the sum of its proper divisors (7035273).

12538743 is a wasteful number, since it uses less digits than its factorization.

12538743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14614.

The product of its digits is 20160, while the sum is 33.

The square root of 12538743 is about 3541.0087545783. The cubic root of 12538743 is about 232.3189664881.

The spelling of 12538743 in words is "twelve million, five hundred thirty-eight thousand, seven hundred forty-three".