1243130140243 has 16 divisors (see below), whose sum is σ = 1295521970400. Its totient is φ = 1191804824320.

The previous prime is 1243130140207. The next prime is 1243130140253. The reversal of 1243130140243 is 3420410313421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1243130140243 - 2¹³ = 1243130132051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243130140253) 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 15 ways as a sum of consecutive naturals, for example, 6418953 + ... + 6609781.

It is an arithmetic number, because the mean of its divisors is an integer number (80970123150).

Almost surely, 2^{1243130140243} is an apocalyptic number.

1243130140243 is a deficient number, since it is larger than the sum of its proper divisors (52391830157).

1243130140243 is a wasteful number, since it uses less digits than its factorization.

1243130140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193622.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1243130140243 its reverse (3420410313421), we get a palindrome (4663540453664).

The spelling of 1243130140243 in words is "one trillion, two hundred forty-three billion, one hundred thirty million, one hundred forty thousand, two hundred forty-three".