1242142003120 has 20 divisors (see below), whose sum is σ = 2887980157440. Its totient is φ = 496856801216.

The previous prime is 1242142003103. The next prime is 1242142003121. The reversal of 1242142003120 is 213002412421.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1242142003091 and 1242142003100.

It is not an unprimeable number, because it can be changed into a prime (1242142003121) 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, 7763387440 + ... + 7763387599.

It is an arithmetic number, because the mean of its divisors is an integer number (144399007872).

Almost surely, 2^{1242142003120} is an apocalyptic number.

1242142003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242142003120 is an abundant number, since it is smaller than the sum of its proper divisors (1645838154320).

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

1242142003120 is a wasteful number, since it uses less digits than its factorization.

1242142003120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15526775052 (or 15526775046 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1242142003120 its reverse (213002412421), we get a palindrome (1455144415541).

The spelling of 1242142003120 in words is "one trillion, two hundred forty-two billion, one hundred forty-two million, three thousand, one hundred twenty".