542566405 has 16 divisors (see below), whose sum is σ = 661849344. Its totient is φ = 426931200.

The previous prime is 542566397. The next prime is 542566411. The reversal of 542566405 is 504665245.

It is not a de Polignac number, because 542566405 - 2³ = 542566397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 74277 + ... + 81253.

It is an arithmetic number, because the mean of its divisors is an integer number (41365584).

Almost surely, 2^542566405 is an apocalyptic number.

It is an amenable number.

542566405 is a deficient number, since it is larger than the sum of its proper divisors (119282939).

542566405 is a wasteful number, since it uses less digits than its factorization.

542566405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 542566405 is about 23293.0548662042. The cubic root of 542566405 is about 815.6133012713.

The spelling of 542566405 in words is "five hundred forty-two million, five hundred sixty-six thousand, four hundred five".