1240001143040 has 144 divisors (see below), whose sum is σ = 3272292547776. Its totient is φ = 446444544000.

The previous prime is 1240001143027. The next prime is 1240001143081. The reversal of 1240001143040 is 403411000421.

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 15 ways as a sum of consecutive naturals, for example, 986099 + ... + 1858061.

It is an arithmetic number, because the mean of its divisors is an integer number (22724253804).

Almost surely, 2^{1240001143040} is an apocalyptic number.

1240001143040 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 1240001143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636146273888).

1240001143040 is an abundant number, since it is smaller than the sum of its proper divisors (2032291404736).

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

1240001143040 is a wasteful number, since it uses less digits than its factorization.

1240001143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872096 (or 872082 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1240001143040 its reverse (403411000421), we get a palindrome (1643412143461).

The spelling of 1240001143040 in words is "one trillion, two hundred forty billion, one million, one hundred forty-three thousand, forty".