13239145 has 8 divisors (see below), whose sum is σ = 16577856. Its totient is φ = 10130736.

The previous prime is 13239137. The next prime is 13239199. The reversal of 13239145 is 54193231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13239145 - 2³ = 13239137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57447 + ... + 57676.

It is an arithmetic number, because the mean of its divisors is an integer number (2072232).

Almost surely, 2^13239145 is an apocalyptic number.

It is an amenable number.

13239145 is a deficient number, since it is larger than the sum of its proper divisors (3338711).

13239145 is a wasteful number, since it uses less digits than its factorization.

13239145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115151.

The product of its digits is 3240, while the sum is 28.

The square root of 13239145 is about 3638.5635902097. The cubic root of 13239145 is about 236.5665372458.

It can be divided in two parts, 132391 and 45, that multiplied together give a palindrome (5957595).

The spelling of 13239145 in words is "thirteen million, two hundred thirty-nine thousand, one hundred forty-five".