542021380 has 12 divisors (see below), whose sum is σ = 1138244940. Its totient is φ = 216808544.

The previous prime is 542021317. The next prime is 542021383. The reversal of 542021380 is 83120245.

It can be written as a sum of positive squares in 2 ways, for example, as 76842756 + 465178624 = 8766^2 + 21568^2 .

It is not an unprimeable number, because it can be changed into a prime (542021383) 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 3 ways as a sum of consecutive naturals, for example, 13550515 + ... + 13550554.

It is an arithmetic number, because the mean of its divisors is an integer number (94853745).

Almost surely, 2^542021380 is an apocalyptic number.

It is an amenable number.

542021380 is an abundant number, since it is smaller than the sum of its proper divisors (596223560).

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

542021380 is a wasteful number, since it uses less digits than its factorization.

542021380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27101078 (or 27101076 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 542021380 is about 23281.3526239349. The cubic root of 542021380 is about 815.3401067114.

The spelling of 542021380 in words is "five hundred forty-two million, twenty-one thousand, three hundred eighty".