13121743 has 2 divisors, whose sum is σ = 13121744. Its totient is φ = 13121742.

The previous prime is 13121737. The next prime is 13121803. The reversal of 13121743 is 34712131.

13121743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13121743 - 2⁹ = 13121231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560871 + 6560872.

It is an arithmetic number, because the mean of its divisors is an integer number (6560872).

Almost surely, 2^13121743 is an apocalyptic number.

13121743 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121743 is an equidigital number, since it uses as much as digits as its factorization.

13121743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 13121743 is about 3622.3946499519. The cubic root of 13121743 is about 235.8651856184.

Adding to 13121743 its reverse (34712131), we get a palindrome (47833874).

The spelling of 13121743 in words is "thirteen million, one hundred twenty-one thousand, seven hundred forty-three".