1121178645542 has 8 divisors (see below), whose sum is σ = 1736018548032. Its totient is φ = 542505796200.

The previous prime is 1121178645541. The next prime is 1121178645563. The reversal of 1121178645542 is 2455468711211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121178645541) 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 3 ways as a sum of consecutive naturals, for example, 9041763209 + ... + 9041763332.

It is an arithmetic number, because the mean of its divisors is an integer number (217002318504).

Almost surely, 2^{1121178645542} is an apocalyptic number.

1121178645542 is a deficient number, since it is larger than the sum of its proper divisors (614839902490).

1121178645542 is a wasteful number, since it uses less digits than its factorization.

1121178645542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18083526574.

The product of its digits is 537600, while the sum is 47.

The spelling of 1121178645542 in words is "one trillion, one hundred twenty-one billion, one hundred seventy-eight million, six hundred forty-five thousand, five hundred forty-two".