1542445556 has 12 divisors (see below), whose sum is σ = 2709544992. Its totient is φ = 768289848.

The previous prime is 1542445511. The next prime is 1542445571. The reversal of 1542445556 is 6555442451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732050 + ... + 734153.

It is an arithmetic number, because the mean of its divisors is an integer number (225795416).

Almost surely, 2^1542445556 is an apocalyptic number.

It is an amenable number.

1542445556 is a deficient number, since it is larger than the sum of its proper divisors (1167099436).

1542445556 is a wasteful number, since it uses less digits than its factorization.

1542445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466470 (or 1466468 counting only the distinct ones).

The product of its digits is 480000, while the sum is 41.

The square root of 1542445556 is about 39273.9806487705. The cubic root of 1542445556 is about 1155.4113103165.

The spelling of 1542445556 in words is "one billion, five hundred forty-two million, four hundred forty-five thousand, five hundred fifty-six".