133440043240 has 128 divisors (see below), whose sum is σ = 346495968000. Its totient is φ = 45304197120.

The previous prime is 133440043223. The next prime is 133440043277. The reversal of 133440043240 is 42340044331.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 133440043199 and 133440043208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14054895 + ... + 14064385.

It is an arithmetic number, because the mean of its divisors is an integer number (2706999750).

Almost surely, 2^133440043240 is an apocalyptic number.

133440043240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133440043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173247984000).

133440043240 is an abundant number, since it is smaller than the sum of its proper divisors (213055924760).

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

133440043240 is a wasteful number, since it uses less digits than its factorization.

133440043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9995 (or 9991 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 133440043240 its reverse (42340044331), we get a palindrome (175780087571).

The spelling of 133440043240 in words is "one hundred thirty-three billion, four hundred forty million, forty-three thousand, two hundred forty".