1243140120124 has 12 divisors (see below), whose sum is σ = 2486280240304. Its totient is φ = 532774337184.

The previous prime is 1243140120059. The next prime is 1243140120127. The reversal of 1243140120124 is 4210210413421.

1243140120124 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243140120127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22198930689 + ... + 22198930744.

Almost surely, 2^{1243140120124} is an apocalyptic number.

1243140120124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1243140120124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1243140120124 is a wasteful number, since it uses less digits than its factorization.

1243140120124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44397861444 (or 44397861442 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1243140120124 its reverse (4210210413421), we get a palindrome (5453350533545).

The spelling of 1243140120124 in words is "one trillion, two hundred forty-three billion, one hundred forty million, one hundred twenty thousand, one hundred twenty-four".