13123020 has 24 divisors (see below), whose sum is σ = 36744624. Its totient is φ = 3499456.

The previous prime is 13123009. The next prime is 13123021. The reversal of 13123020 is 2032131.

It is a happy number.

13123020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 13122987 and 13123005.

It is not an unprimeable number, because it can be changed into a prime (13123021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109299 + ... + 109418.

It is an arithmetic number, because the mean of its divisors is an integer number (1531026).

Almost surely, 2^13123020 is an apocalyptic number.

13123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123020 is an abundant number, since it is smaller than the sum of its proper divisors (23621604).

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

13123020 is a wasteful number, since it uses less digits than its factorization.

13123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218729 (or 218727 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13123020 is about 3622.5709102791. The cubic root of 13123020 is about 235.8728367887.

Adding to 13123020 its reverse (2032131), we get a palindrome (15155151).

The spelling of 13123020 in words is "thirteen million, one hundred twenty-three thousand, twenty".