1242232140042 has 192 divisors, whose sum is σ = 2918421792000. Its totient is φ = 380484532224.

The previous prime is 1242232140029. The next prime is 1242232140043. The reversal of 1242232140042 is 2400412322421.

It is a happy number.

1242232140042 is a `hidden beast` number, since 1 + 24 + 2 + 232 + 1 + 400 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1242232139988 and 1242232140015.

It is not an unprimeable number, because it can be changed into a prime (1242232140043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 786720009 + ... + 786721587.

It is an arithmetic number, because the mean of its divisors is an integer number (15200113500).

Almost surely, 2^{1242232140042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242232140042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459210896000).

1242232140042 is an abundant number, since it is smaller than the sum of its proper divisors (1676189651958).

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

1242232140042 is a wasteful number, since it uses less digits than its factorization.

1242232140042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1242232140042 its reverse (2400412322421), we get a palindrome (3642644462463).

The spelling of 1242232140042 in words is "one trillion, two hundred forty-two billion, two hundred thirty-two million, one hundred forty thousand, forty-two".