542163778 has 32 divisors (see below), whose sum is σ = 888241536. Its totient is φ = 246699648.

The previous prime is 542163763. The next prime is 542163781. The reversal of 542163778 is 877361245.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1186126 + ... + 1186582.

It is an arithmetic number, because the mean of its divisors is an integer number (27757548).

Almost surely, 2^542163778 is an apocalyptic number.

542163778 is a deficient number, since it is larger than the sum of its proper divisors (346077758).

542163778 is a wasteful number, since it uses less digits than its factorization.

542163778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018.

The product of its digits is 282240, while the sum is 43.

The square root of 542163778 is about 23284.4106217014. The cubic root of 542163778 is about 815.4115015794.

The spelling of 542163778 in words is "five hundred forty-two million, one hundred sixty-three thousand, seven hundred seventy-eight".