1216712727042 has 8 divisors (see below), whose sum is σ = 2433425454096. Its totient is φ = 405570909012.

The previous prime is 1216712726989. The next prime is 1216712727059. The reversal of 1216712727042 is 2407272176121.

It is a sphenic number, since it is the product of 3 distinct primes.

1216712727042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1216712726985 and 1216712727003.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 101392727248 + ... + 101392727259.

It is an arithmetic number, because the mean of its divisors is an integer number (304178181762).

Almost surely, 2^{1216712727042} is an apocalyptic number.

1216712727042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1216712727042 is a wasteful number, since it uses less digits than its factorization.

1216712727042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202785454512.

The product of its (nonzero) digits is 131712, while the sum is 42.

The spelling of 1216712727042 in words is "one trillion, two hundred sixteen billion, seven hundred twelve million, seven hundred twenty-seven thousand, forty-two".