542429856 has 72 divisors (see below), whose sum is σ = 1565613504. Its totient is φ = 178104960.

The previous prime is 542429851. The next prime is 542429857. The reversal of 542429856 is 658924245.

542429856 is a `hidden beast` number, since 542 + 4 + 29 + 85 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (542429851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5241 + ... + 33351.

It is an arithmetic number, because the mean of its divisors is an integer number (21744632).

Almost surely, 2^542429856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542429856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782806752).

542429856 is an abundant number, since it is smaller than the sum of its proper divisors (1023183648).

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

542429856 is a wasteful number, since it uses less digits than its factorization.

542429856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28194 (or 28183 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 542429856 is about 23290.1235720208. The cubic root of 542429856 is about 815.5448730728.

It can be divided in two parts, 54 and 2429856, that added together give a triangular number (2429910 = T₂₂₀₄).

The spelling of 542429856 in words is "five hundred forty-two million, four hundred twenty-nine thousand, eight hundred fifty-six".