1542431656428 has 48 divisors (see below), whose sum is σ = 3876067724256. Its totient is φ = 474568174080.

The previous prime is 1542431656427. The next prime is 1542431656433. The reversal of 1542431656428 is 8246561342451.

It is not an unprimeable number, because it can be changed into a prime (1542431656427) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2665248 + ... + 3191928.

It is an arithmetic number, because the mean of its divisors is an integer number (80751410922).

Almost surely, 2^{1542431656428} is an apocalyptic number.

It is an amenable number.

1542431656428 is an abundant number, since it is smaller than the sum of its proper divisors (2333636067828).

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

1542431656428 is a wasteful number, since it uses less digits than its factorization.

1542431656428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545474 (or 545472 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 51.

Adding to 1542431656428 its reverse (8246561342451), we get a palindrome (9788992998879).

The spelling of 1542431656428 in words is "one trillion, five hundred forty-two billion, four hundred thirty-one million, six hundred fifty-six thousand, four hundred twenty-eight".