12749541 has 32 divisors (see below), whose sum is σ = 20901888. Its totient is φ = 6746880.

The previous prime is 12749537. The next prime is 12749557. The reversal of 12749541 is 14594721.

It is a happy number.

It is not a de Polignac number, because 12749541 - 2² = 12749537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25096 + ... + 25598.

It is an arithmetic number, because the mean of its divisors is an integer number (653184).

Almost surely, 2^12749541 is an apocalyptic number.

It is an amenable number.

12749541 is a deficient number, since it is larger than the sum of its proper divisors (8152347).

12749541 is a wasteful number, since it uses less digits than its factorization.

12749541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its digits is 10080, while the sum is 33.

The square root of 12749541 is about 3570.6499408371. The cubic root of 12749541 is about 233.6136329869.

The spelling of 12749541 in words is "twelve million, seven hundred forty-nine thousand, five hundred forty-one".