13121450 has 48 divisors (see below), whose sum is σ = 26516160. Its totient is φ = 4811520.

The previous prime is 13121441. The next prime is 13121453. The reversal of 13121450 is 5412131.

13121450 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 (17).

It is not an unprimeable number, because it can be changed into a prime (13121453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36371 + ... + 36729.

It is an arithmetic number, because the mean of its divisors is an integer number (552420).

Almost surely, 2^13121450 is an apocalyptic number.

13121450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121450 is an abundant number, since it is smaller than the sum of its proper divisors (13394710).

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

13121450 is a wasteful number, since it uses less digits than its factorization.

13121450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13121450 is about 3622.3542068660. The cubic root of 13121450 is about 235.8634300332.

Adding to 13121450 its reverse (5412131), we get a palindrome (18533581).

The spelling of 13121450 in words is "thirteen million, one hundred twenty-one thousand, four hundred fifty".