1542438856 has 48 divisors (see below), whose sum is σ = 3435868800. Its totient is φ = 646972704.

The previous prime is 1542438847. The next prime is 1542438899. The reversal of 1542438856 is 6588342451.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23436 + ... + 60283.

It is an arithmetic number, because the mean of its divisors is an integer number (71580600).

Almost surely, 2^1542438856 is an apocalyptic number.

It is an amenable number.

1542438856 is an abundant number, since it is smaller than the sum of its proper divisors (1893429944).

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

1542438856 is a wasteful number, since it uses less digits than its factorization.

1542438856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83786 (or 83775 counting only the distinct ones).

The product of its digits is 921600, while the sum is 46.

The square root of 1542438856 is about 39273.8953504742. The cubic root of 1542438856 is about 1155.4096373743.

The spelling of 1542438856 in words is "one billion, five hundred forty-two million, four hundred thirty-eight thousand, eight hundred fifty-six".