1218040573542 has 64 divisors (see below), whose sum is σ = 2673347011776. Its totient is φ = 367658703360.

The previous prime is 1218040573531. The next prime is 1218040573573. The reversal of 1218040573542 is 2453750408121.

It is a junction number, because it is equal to n+sod(n) for n = 1218040573494 and 1218040573503.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 37739692 + ... + 37771952.

It is an arithmetic number, because the mean of its divisors is an integer number (41771047059).

Almost surely, 2^{1218040573542} is an apocalyptic number.

1218040573542 is an abundant number, since it is smaller than the sum of its proper divisors (1455306438234).

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

1218040573542 is a wasteful number, since it uses less digits than its factorization.

1218040573542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41465.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 1218040573542 in words is "one trillion, two hundred eighteen billion, forty million, five hundred seventy-three thousand, five hundred forty-two".