542021212 has 24 divisors (see below), whose sum is σ = 966389760. Its totient is φ = 265951920.

The previous prime is 542021209. The next prime is 542021213. The reversal of 542021212 is 212120245.

It is a self number, because there is not a number n which added to its sum of digits gives 542021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542021213) 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 7 ways as a sum of consecutive naturals, for example, 47637 + ... + 57907.

It is an arithmetic number, because the mean of its divisors is an integer number (40266240).

Almost surely, 2^542021212 is an apocalyptic number.

It is an amenable number.

542021212 is a deficient number, since it is larger than the sum of its proper divisors (424368548).

542021212 is a wasteful number, since it uses less digits than its factorization.

542021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521 (or 10519 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 542021212 is about 23281.3490158968. The cubic root of 542021212 is about 815.3400224730.

Adding to 542021212 its reverse (212120245), we get a palindrome (754141457).

The spelling of 542021212 in words is "five hundred forty-two million, twenty-one thousand, two hundred twelve".