212142616 has 32 divisors (see below), whose sum is σ = 474359040. Its totient is φ = 86964768.

The previous prime is 212142613. The next prime is 212142617. The reversal of 212142616 is 616241212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212142613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81066 + ... + 83641.

It is an arithmetic number, because the mean of its divisors is an integer number (14823720).

Almost surely, 2^212142616 is an apocalyptic number.

It is an amenable number.

212142616 is an abundant number, since it is smaller than the sum of its proper divisors (262216424).

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

212142616 is a wasteful number, since it uses less digits than its factorization.

212142616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164743 (or 164739 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 212142616 is about 14565.1164087349. The cubic root of 212142616 is about 596.4068735045.

Adding to 212142616 its reverse (616241212), we get a palindrome (828383828).

The spelling of 212142616 in words is "two hundred twelve million, one hundred forty-two thousand, six hundred sixteen".