13102405 has 8 divisors (see below), whose sum is σ = 15938712. Its totient is φ = 10338048.

The previous prime is 13102361. The next prime is 13102417. The reversal of 13102405 is 50420131.

It can be written as a sum of positive squares in 4 ways, for example, as 2461761 + 10640644 = 1569^2 + 3262^2 .

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 13102405 - 2⁷ = 13102277 is a prime.

It is a Duffinian number.

It is a congruent 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, 17584 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (1992339).

Almost surely, 2^13102405 is an apocalyptic number.

It is an amenable number.

13102405 is a deficient number, since it is larger than the sum of its proper divisors (2836307).

13102405 is an equidigital number, since it uses as much as digits as its factorization.

13102405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35975.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13102405 is about 3619.7244370256. The cubic root of 13102405 is about 235.7492608909.

Adding to 13102405 its reverse (50420131), we get a palindrome (63522536).

The spelling of 13102405 in words is "thirteen million, one hundred two thousand, four hundred five".