13242645 has 24 divisors (see below), whose sum is σ = 24720696. Its totient is φ = 6519168.

The previous prime is 13242637. The next prime is 13242661. The reversal of 13242645 is 54624231.

13242645 is a `hidden beast` number, since 13 + 2 + 4 + 2 + 645 = 666.

13242645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 13242321 = 18^2 + 3639^2 .

It is not a de Polignac number, because 13242645 - 2³ = 13242637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10734 + ... + 11903.

It is an arithmetic number, because the mean of its divisors is an integer number (1030029).

Almost surely, 2^13242645 is an apocalyptic number.

13242645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13242645 is a deficient number, since it is larger than the sum of its proper divisors (11478051).

13242645 is a wasteful number, since it uses less digits than its factorization.

13242645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22661 (or 22658 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 13242645 is about 3639.0445174523. The cubic root of 13242645 is about 236.5873822457.

Adding to 13242645 its reverse (54624231), we get a palindrome (67866876).

It can be divided in two parts, 1324 and 2645, that added together give a square (3969 = 63²).

The spelling of 13242645 in words is "thirteen million, two hundred forty-two thousand, six hundred forty-five".