13145842 has 4 divisors (see below), whose sum is σ = 19718766. Its totient is φ = 6572920.

The previous prime is 13145833. The next prime is 13145843. The reversal of 13145842 is 24854131.

13145842 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: 24854131 = 29 ⋅857039.

It can be written as a sum of positive squares in only one way, i.e., 7284601 + 5861241 = 2699^2 + 2421^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13145842.

It is not an unprimeable number, because it can be changed into a prime (13145843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286459 + ... + 3286462.

Almost surely, 2^13145842 is an apocalyptic number.

13145842 is a deficient number, since it is larger than the sum of its proper divisors (6572924).

13145842 is an equidigital number, since it uses as much as digits as its factorization.

13145842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572923.

The product of its digits is 3840, while the sum is 28.

The square root of 13145842 is about 3625.7195147998. The cubic root of 13145842 is about 236.0094916225.

Adding to 13145842 its reverse (24854131), we get a palindrome (37999973).

The spelling of 13145842 in words is "thirteen million, one hundred forty-five thousand, eight hundred forty-two".