20124430122142 has 16 divisors (see below), whose sum is σ = 30231273059712. Its totient is φ = 10047348071640.

The previous prime is 20124430122133. The next prime is 20124430122143. The reversal of 20124430122142 is 24122103442102.

It is a self number, because there is not a number n which added to its sum of digits gives 20124430122142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124430122143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249983 + ... + 6731365.

It is an arithmetic number, because the mean of its divisors is an integer number (1889454566232).

Almost surely, 2^{20124430122142} is an apocalyptic number.

20124430122142 is a deficient number, since it is larger than the sum of its proper divisors (10106842937570).

20124430122142 is a wasteful number, since it uses less digits than its factorization.

20124430122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484703.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20124430122142 its reverse (24122103442102), we get a palindrome (44246533564244).

The spelling of 20124430122142 in words is "twenty trillion, one hundred twenty-four billion, four hundred thirty million, one hundred twenty-two thousand, one hundred forty-two".