1140021001243 has 8 divisors (see below), whose sum is σ = 1148294979440. Its totient is φ = 1131748057440.

The previous prime is 1140021001241. The next prime is 1140021001271. The reversal of 1140021001243 is 3421001200411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1140021001243 - 2¹ = 1140021001241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140021001243.

It is not an unprimeable number, because it can be changed into a prime (1140021001241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026621 + ... + 2527297.

It is an arithmetic number, because the mean of its divisors is an integer number (143536872430).

Almost surely, 2^{1140021001243} is an apocalyptic number.

1140021001243 is a deficient number, since it is larger than the sum of its proper divisors (8273978197).

1140021001243 is a wasteful number, since it uses less digits than its factorization.

1140021001243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517197.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1140021001243 its reverse (3421001200411), we get a palindrome (4561022201654).

The spelling of 1140021001243 in words is "one trillion, one hundred forty billion, twenty-one million, one thousand, two hundred forty-three".