212132342 has 4 divisors (see below), whose sum is σ = 318198516. Its totient is φ = 106066170.

The previous prime is 212132339. The next prime is 212132369. The reversal of 212132342 is 243231212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53033084 + ... + 53033087.

It is an arithmetic number, because the mean of its divisors is an integer number (79549629).

Almost surely, 2^212132342 is an apocalyptic number.

212132342 is a deficient number, since it is larger than the sum of its proper divisors (106066174).

212132342 is a wasteful number, since it uses less digits than its factorization.

212132342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106066173.

The product of its digits is 576, while the sum is 20.

The square root of 212132342 is about 14564.7637124672. The cubic root of 212132342 is about 596.3972454168.

Adding to 212132342 its reverse (243231212), we get a palindrome (455363554).

The spelling of 212132342 in words is "two hundred twelve million, one hundred thirty-two thousand, three hundred forty-two".