13123845 has 48 divisors (see below), whose sum is σ = 26462592. Its totient is φ = 5892480.

The previous prime is 13123841. The next prime is 13123849. The reversal of 13123845 is 54832131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13123841) and next prime (13123849).

It is not a de Polignac number, because 13123845 - 2² = 13123841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18874 + ... + 19556.

It is an arithmetic number, because the mean of its divisors is an integer number (551304).

Almost surely, 2^13123845 is an apocalyptic number.

13123845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13123845 is an abundant number, since it is smaller than the sum of its proper divisors (13338747).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123845 is a wasteful number, since it uses less digits than its factorization.

13123845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 759 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 13123845 is about 3622.6847778961. The cubic root of 13123845 is about 235.8777795283.

Adding to 13123845 its reverse (54832131), we get a palindrome (67955976).

The spelling of 13123845 in words is "thirteen million, one hundred twenty-three thousand, eight hundred forty-five".