13042397 has 4 divisors (see below), whose sum is σ = 13084380. Its totient is φ = 13000416.

The previous prime is 13042339. The next prime is 13042409. The reversal of 13042397 is 79324031.

13042397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79324031 = 19 ⋅4174949.

It can be written as a sum of positive squares in 2 ways, for example, as 729316 + 12313081 = 854^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 13042397 - 2⁶ = 13042333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20522 + ... + 21147.

It is an arithmetic number, because the mean of its divisors is an integer number (3271095).

Almost surely, 2^13042397 is an apocalyptic number.

It is an amenable number.

13042397 is a deficient number, since it is larger than the sum of its proper divisors (41983).

13042397 is an equidigital number, since it uses as much as digits as its factorization.

13042397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41982.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 13042397 is about 3611.4258956816. The cubic root of 13042397 is about 235.3888055924.

The spelling of 13042397 in words is "thirteen million, forty-two thousand, three hundred ninety-seven".