1224112723142 has 16 divisors (see below), whose sum is σ = 1849647029472. Its totient is φ = 607564077120.

The previous prime is 1224112723129. The next prime is 1224112723147. The reversal of 1224112723142 is 2413272114221.

It is a junction number, because it is equal to n+sod(n) for n = 1224112723099 and 1224112723108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224112723147) 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 7 ways as a sum of consecutive naturals, for example, 7952792 + ... + 8105252.

It is an arithmetic number, because the mean of its divisors is an integer number (115602939342).

Almost surely, 2^{1224112723142} is an apocalyptic number.

1224112723142 is a deficient number, since it is larger than the sum of its proper divisors (625534306330).

1224112723142 is a wasteful number, since it uses less digits than its factorization.

1224112723142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181903.

The product of its digits is 10752, while the sum is 32.

Adding to 1224112723142 its reverse (2413272114221), we get a palindrome (3637384837363).

The spelling of 1224112723142 in words is "one trillion, two hundred twenty-four billion, one hundred twelve million, seven hundred twenty-three thousand, one hundred forty-two".