2140535785249 has 9 divisors (see below), whose sum is σ = 2259154363953. Its totient is φ = 2027849672052.

The previous prime is 2140535785217. The next prime is 2140535785313. The reversal of 2140535785249 is 9425875350412.

It is a happy number.

The square root of 2140535785249 is 1463057.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2140535785249 - 2⁵ = 2140535785217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140535785249.

It is not an unprimeable number, because it can be changed into a prime (2140535783249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27759582 + ... + 27836584.

Almost surely, 2^{2140535785249} is an apocalyptic number.

2140535785249 is the 1463057-th square number.

2140535785249 is the 731529-th centered octagonal number.

It is an amenable number.

2140535785249 is a deficient number, since it is larger than the sum of its proper divisors (118618578704).

2140535785249 is an frugal number, since it uses more digits than its factorization.

2140535785249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154044 (or 77022 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 2140535785249 in words is "two trillion, one hundred forty billion, five hundred thirty-five million, seven hundred eighty-five thousand, two hundred forty-nine".