13042005 has 8 divisors (see below), whose sum is σ = 20867232. Its totient is φ = 6955728.

The previous prime is 13041997. The next prime is 13042013. The reversal of 13042005 is 50024031.

It is an interprime number because it is at equal distance from previous prime (13041997) and next prime (13042013).

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

It is not a de Polignac number, because 13042005 - 2³ = 13041997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 869467 = 13042005 / (1 + 3 + 0 + 4 + 2 + 0 + 0 + 5).

It is a Curzon 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, 434719 + ... + 434748.

It is an arithmetic number, because the mean of its divisors is an integer number (2608404).

Almost surely, 2^13042005 is an apocalyptic number.

13042005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13042005 is a deficient number, since it is larger than the sum of its proper divisors (7825227).

13042005 is an equidigital number, since it uses as much as digits as its factorization.

13042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869475.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 13042005 is about 3611.3716230817. The cubic root of 13042005 is about 235.3864473005.

Adding to 13042005 its reverse (50024031), we get a palindrome (63066036).

The spelling of 13042005 in words is "thirteen million, forty-two thousand, five".