13040121250 has 80 divisors (see below), whose sum is σ = 26426734488. Its totient is φ = 4795776000.

The previous prime is 13040121187. The next prime is 13040121253. The reversal of 13040121250 is 5212104031.

It can be written as a sum of positive squares in 20 ways, for example, as 11906519689 + 1133601561 = 109117^2 + 33669^2 .

It is not an unprimeable number, because it can be changed into a prime (13040121253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4499802 + ... + 4502698.

Almost surely, 2^13040121250 is an apocalyptic number.

13040121250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13040121250 is an abundant number, since it is smaller than the sum of its proper divisors (13386613238).

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

13040121250 is a wasteful number, since it uses less digits than its factorization.

13040121250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3194 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 13040121250 its reverse (5212104031), we get a palindrome (18252225281).

The spelling of 13040121250 in words is "thirteen billion, forty million, one hundred twenty-one thousand, two hundred fifty".