12942549 has 6 divisors (see below), whose sum is σ = 18694806. Its totient is φ = 8628360.

The previous prime is 12942539. The next prime is 12942571. The reversal of 12942549 is 94524921.

12942549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 5489649 = 2730^2 + 2343^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12942549 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 (12942509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 719022 + ... + 719039.

It is an arithmetic number, because the mean of its divisors is an integer number (3115801).

Almost surely, 2^12942549 is an apocalyptic number.

It is an amenable number.

12942549 is a deficient number, since it is larger than the sum of its proper divisors (5752257).

12942549 is a wasteful number, since it uses less digits than its factorization.

12942549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438067 (or 1438064 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12942549 is about 3597.5754335385. The cubic root of 12942549 is about 234.7865815529.

The spelling of 12942549 in words is "twelve million, nine hundred forty-two thousand, five hundred forty-nine".