542396556 has 72 divisors (see below), whose sum is σ = 1479440144. Its totient is φ = 166561920.

The previous prime is 542396551. The next prime is 542396573. The reversal of 542396556 is 655693245.

542396556 is a `hidden beast` number, since 5 + 4 + 2 + 3 + 96 + 556 = 666.

It is a super-2 number, since 2×542396556² = 588388047921322272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (542396551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353511 + ... + 355041.

Almost surely, 2^542396556 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 542396556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739720072).

542396556 is an abundant number, since it is smaller than the sum of its proper divisors (937043588).

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

542396556 is a wasteful number, since it uses less digits than its factorization.

542396556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2306 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 542396556 is about 23289.4086657433. The cubic root of 542396556 is about 815.5281838488.

The spelling of 542396556 in words is "five hundred forty-two million, three hundred ninety-six thousand, five hundred fifty-six".