542884381 has 4 divisors (see below), whose sum is σ = 584644732. Its totient is φ = 501124032.

The previous prime is 542884367. The next prime is 542884423. The reversal of 542884381 is 183488245.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271129156 + 271755225 = 16466^2 + 16485^2 .

It is a cyclic number.

It is not a de Polignac number, because 542884381 - 2¹⁵ = 542851613 is a prime.

It is a super-2 number, since 2×542884381² = 589446902267506322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542884301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20880156 + ... + 20880181.

It is an arithmetic number, because the mean of its divisors is an integer number (146161183).

Almost surely, 2^542884381 is an apocalyptic number.

It is an amenable number.

542884381 is a deficient number, since it is larger than the sum of its proper divisors (41760351).

542884381 is a wasteful number, since it uses less digits than its factorization.

542884381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41760350.

The product of its digits is 245760, while the sum is 43.

The square root of 542884381 is about 23299.8794202889. The cubic root of 542884381 is about 815.7726026983.

The spelling of 542884381 in words is "five hundred forty-two million, eight hundred eighty-four thousand, three hundred eighty-one".