13243075 has 6 divisors (see below), whose sum is σ = 16421444. Its totient is φ = 10594440.

The previous prime is 13243067. The next prime is 13243079. The reversal of 13243075 is 57034231.

It is not a de Polignac number, because 13243075 - 2³ = 13243067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 529723 = 13243075 / (1 + 3 + 2 + 4 + 3 + 0 + 7 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13243079) 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, 264837 + ... + 264886.

Almost surely, 2^13243075 is an apocalyptic number.

13243075 is a deficient number, since it is larger than the sum of its proper divisors (3178369).

13243075 is an equidigital number, since it uses as much as digits as its factorization.

13243075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529733 (or 529728 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 13243075 is about 3639.1035984154. The cubic root of 13243075 is about 236.5899429495.

The spelling of 13243075 in words is "thirteen million, two hundred forty-three thousand, seventy-five".