1140101243 has 6 divisors (see below), whose sum is σ = 1211111316. Its totient is φ = 1073036192.

The previous prime is 1140101233. The next prime is 1140101257. The reversal of 1140101243 is 3421010411.

It is a happy number.

It is not a de Polignac number, because 1140101243 - 2¹⁰ = 1140100219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140101203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1972205 + ... + 1972782.

It is an arithmetic number, because the mean of its divisors is an integer number (201851886).

Almost surely, 2^1140101243 is an apocalyptic number.

1140101243 is a deficient number, since it is larger than the sum of its proper divisors (71010073).

1140101243 is an equidigital number, since it uses as much as digits as its factorization.

1140101243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945021 (or 3945004 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1140101243 is about 33765.3852784179. The cubic root of 1140101243 is about 1044.6748507271.

Adding to 1140101243 its reverse (3421010411), we get a palindrome (4561111654).

The spelling of 1140101243 in words is "one billion, one hundred forty million, one hundred one thousand, two hundred forty-three".