1542889045842 has 32 divisors (see below), whose sum is σ = 3189199440384. Its totient is φ = 497099875200.

The previous prime is 1542889045717. The next prime is 1542889045849. The reversal of 1542889045842 is 2485409882451.

It is not an unprimeable number, because it can be changed into a prime (1542889045849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4899123 + ... + 5204534.

It is an arithmetic number, because the mean of its divisors is an integer number (99662482512).

Almost surely, 2^{1542889045842} is an apocalyptic number.

1542889045842 is an abundant number, since it is smaller than the sum of its proper divisors (1646310394542).

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

1542889045842 is a wasteful number, since it uses less digits than its factorization.

1542889045842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10104514.

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 1542889045842 in words is "one trillion, five hundred forty-two billion, eight hundred eighty-nine million, forty-five thousand, eight hundred forty-two".