1243134120102 has 64 divisors (see below), whose sum is σ = 2877719961600. Its totient is φ = 350648307360.

The previous prime is 1243134120091. The next prime is 1243134120103. The reversal of 1243134120102 is 2010214313421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243134120103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52980049 + ... + 53003507.

It is an arithmetic number, because the mean of its divisors is an integer number (44964374400).

Almost surely, 2^{1243134120102} is an apocalyptic number.

1243134120102 is an abundant number, since it is smaller than the sum of its proper divisors (1634585841498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243134120102 is a wasteful number, since it uses less digits than its factorization.

1243134120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39521.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1243134120102 its reverse (2010214313421), we get a palindrome (3253348433523).

The spelling of 1243134120102 in words is "one trillion, two hundred forty-three billion, one hundred thirty-four million, one hundred twenty thousand, one hundred two".