542212101 has 48 divisors (see below), whose sum is σ = 869356800. Its totient is φ = 324245376.

The previous prime is 542212057. The next prime is 542212117. The reversal of 542212101 is 101212245.

542212101 is a `hidden beast` number, since 542 + 2 + 121 + 0 + 1 = 666.

It is not a de Polignac number, because 542212101 - 2⁶ = 542212037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542212141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261796 + ... + 263858.

It is an arithmetic number, because the mean of its divisors is an integer number (18111600).

Almost surely, 2^542212101 is an apocalyptic number.

It is an amenable number.

542212101 is a deficient number, since it is larger than the sum of its proper divisors (327144699).

542212101 is a wasteful number, since it uses less digits than its factorization.

542212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 542212101 is about 23285.4482671045. The cubic root of 542212101 is about 815.4357267066.

Adding to 542212101 its reverse (101212245), we get a palindrome (643424346).

The spelling of 542212101 in words is "five hundred forty-two million, two hundred twelve thousand, one hundred one".