1243434144101 has 4 divisors (see below), whose sum is σ = 1243440931212. Its totient is φ = 1243427356992.

The previous prime is 1243434144097. The next prime is 1243434144109. The reversal of 1243434144101 is 1014414343421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1000252015876 + 243182128225 = 1000126^2 + 493135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243434144101 - 2² = 1243434144097 is a prime.

It is a super-2 number, since 2×1243434144101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243434144109) 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 3 ways as a sum of consecutive naturals, for example, 3110900 + ... + 3487773.

It is an arithmetic number, because the mean of its divisors is an integer number (310860232803).

Almost surely, 2^{1243434144101} is an apocalyptic number.

It is an amenable number.

1243434144101 is a deficient number, since it is larger than the sum of its proper divisors (6787111).

1243434144101 is an equidigital number, since it uses as much as digits as its factorization.

1243434144101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787110.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 1243434144101 its reverse (1014414343421), we get a palindrome (2257848487522).

The spelling of 1243434144101 in words is "one trillion, two hundred forty-three billion, four hundred thirty-four million, one hundred forty-four thousand, one hundred one".