1242501543012 has 24 divisors (see below), whose sum is σ = 2915928481536. Its totient is φ = 411773150368.

The previous prime is 1242501542911. The next prime is 1242501543013. The reversal of 1242501543012 is 2103451052421.

It is not an unprimeable number, because it can be changed into a prime (1242501543013) 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, 299251668 + ... + 299255819.

It is an arithmetic number, because the mean of its divisors is an integer number (121497020064).

Almost surely, 2^{1242501543012} is an apocalyptic number.

1242501543012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242501543012 is an abundant number, since it is smaller than the sum of its proper divisors (1673426938524).

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

1242501543012 is a wasteful number, since it uses less digits than its factorization.

1242501543012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598507667 (or 598507665 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1242501543012 its reverse (2103451052421), we get a palindrome (3345952595433).

The spelling of 1242501543012 in words is "one trillion, two hundred forty-two billion, five hundred one million, five hundred forty-three thousand, twelve".