542820387 has 16 divisors (see below), whose sum is σ = 771420672. Its totient is φ = 338332800.

The previous prime is 542820379. The next prime is 542820409. The reversal of 542820387 is 783028245.

It is not a de Polignac number, because 542820387 - 2³ = 542820379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542820337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27543 + ... + 42944.

It is an arithmetic number, because the mean of its divisors is an integer number (48213792).

Almost surely, 2^542820387 is an apocalyptic number.

542820387 is a deficient number, since it is larger than the sum of its proper divisors (228600285).

542820387 is a wasteful number, since it uses less digits than its factorization.

542820387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70658.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 542820387 is about 23298.5061109076. The cubic root of 542820387 is about 815.7405476204.

The spelling of 542820387 in words is "five hundred forty-two million, eight hundred twenty thousand, three hundred eighty-seven".