13121143040 has 72 divisors (see below), whose sum is σ = 32795800128. Its totient is φ = 5020252160.

The previous prime is 13121142989. The next prime is 13121143051. The reversal of 13121143040 is 4034112131.

It is a super-2 number, since 2×13121143040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 193406 + ... + 252285.

It is an arithmetic number, because the mean of its divisors is an integer number (455497224).

Almost surely, 2^13121143040 is an apocalyptic number.

13121143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121143040 is an abundant number, since it is smaller than the sum of its proper divisors (19674657088).

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

13121143040 is an equidigital number, since it uses as much as digits as its factorization.

13121143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445735 (or 445721 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13121143040 its reverse (4034112131), we get a palindrome (17155255171).

The spelling of 13121143040 in words is "thirteen billion, one hundred twenty-one million, one hundred forty-three thousand, forty".