212133142 has 8 divisors (see below), whose sum is σ = 342676656. Its totient is φ = 97907592.

The previous prime is 212133127. The next prime is 212133149. The reversal of 212133142 is 241331212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133149) 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, 4079458 + ... + 4079509.

It is an arithmetic number, because the mean of its divisors is an integer number (42834582).

Almost surely, 2^212133142 is an apocalyptic number.

212133142 is a deficient number, since it is larger than the sum of its proper divisors (130543514).

212133142 is a wasteful number, since it uses less digits than its factorization.

212133142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158982.

The product of its digits is 288, while the sum is 19.

The square root of 212133142 is about 14564.7911759833. The cubic root of 212133142 is about 596.3979951330.

Adding to 212133142 its reverse (241331212), we get a palindrome (453464354).

The spelling of 212133142 in words is "two hundred twelve million, one hundred thirty-three thousand, one hundred forty-two".