13020242240 has 56 divisors (see below), whose sum is σ = 31175885832. Its totient is φ = 5179299840.

The previous prime is 13020242227. The next prime is 13020242321. The reversal of 13020242240 is 4224202031.

It can be written as a sum of positive squares in 4 ways, for example, as 1540405504 + 11479836736 = 39248^2 + 107144^2 .

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

It is a congruent number.

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, 54479 + ... + 170318.

It is an arithmetic number, because the mean of its divisors is an integer number (556712247).

Almost surely, 2^13020242240 is an apocalyptic number.

13020242240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13020242240 is an abundant number, since it is smaller than the sum of its proper divisors (18155643592).

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

13020242240 is a wasteful number, since it uses less digits than its factorization.

13020242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224995 (or 224985 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 13020242240 its reverse (4224202031), we get a palindrome (17244444271).

The spelling of 13020242240 in words is "thirteen billion, twenty million, two hundred forty-two thousand, two hundred forty".