1042542105156 has 72 divisors (see below), whose sum is σ = 2746087245720. Its totient is φ = 333081616896.

The previous prime is 1042542105113. The next prime is 1042542105167. The reversal of 1042542105156 is 6515012452401.

1042542105156 is a `hidden beast` number, since 1 + 0 + 4 + 2 + 542 + 10 + 51 + 56 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 141436166400 + 901105938756 = 376080^2 + 949266^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1042542105156.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3501511 + ... + 3787566.

It is an arithmetic number, because the mean of its divisors is an integer number (38140100635).

Almost surely, 2^{1042542105156} is an apocalyptic number.

It is an amenable number.

1042542105156 is an abundant number, since it is smaller than the sum of its proper divisors (1703545140564).

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

1042542105156 is a wasteful number, since it uses less digits than its factorization.

1042542105156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289253 (or 7289248 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 1042542105156 its reverse (6515012452401), we get a palindrome (7557554557557).

The spelling of 1042542105156 in words is "one trillion, forty-two billion, five hundred forty-two million, one hundred five thousand, one hundred fifty-six".