13120045 has 8 divisors (see below), whose sum is σ = 15770520. Its totient is φ = 10478400.

The previous prime is 13119983. The next prime is 13120057. The reversal of 13120045 is 54002131.

It can be written as a sum of positive squares in 4 ways, for example, as 59049 + 13060996 = 243^2 + 3614^2 .

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

It is not a de Polignac number, because 13120045 - 2⁷ = 13119917 is a prime.

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, 1695 + ... + 5395.

It is an arithmetic number, because the mean of its divisors is an integer number (1971315).

Almost surely, 2^13120045 is an apocalyptic number.

It is an amenable number.

13120045 is a deficient number, since it is larger than the sum of its proper divisors (2650475).

13120045 is an equidigital number, since it uses as much as digits as its factorization.

13120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415.

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

The square root of 13120045 is about 3622.1602670230. The cubic root of 13120045 is about 235.8550112495.

Adding to 13120045 its reverse (54002131), we get a palindrome (67122176).

The spelling of 13120045 in words is "thirteen million, one hundred twenty thousand, forty-five".