1123243121142 has 24 divisors (see below), whose sum is σ = 2433713667840. Its totient is φ = 374411260080.

The previous prime is 1123243121129. The next prime is 1123243121149. The reversal of 1123243121142 is 2411213423211.

1123243121142 is a `hidden beast` number, since 1 + 1 + 232 + 4 + 312 + 114 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123243121149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3242784 + ... + 3572412.

It is an arithmetic number, because the mean of its divisors is an integer number (101404736160).

Almost surely, 2^{1123243121142} is an apocalyptic number.

1123243121142 is an abundant number, since it is smaller than the sum of its proper divisors (1310470546698).

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

1123243121142 is a wasteful number, since it uses less digits than its factorization.

1123243121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518948 (or 518945 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 1123243121142 its reverse (2411213423211), we get a palindrome (3534456544353).

The spelling of 1123243121142 in words is "one trillion, one hundred twenty-three billion, two hundred forty-three million, one hundred twenty-one thousand, one hundred forty-two".