212112142 has 8 divisors (see below), whose sum is σ = 347092632. Its totient is φ = 96414600.

The previous prime is 212112091. The next prime is 212112161. The reversal of 212112142 is 241211212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820709 + ... + 4820752.

It is an arithmetic number, because the mean of its divisors is an integer number (43386579).

Almost surely, 2^212112142 is an apocalyptic number.

212112142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212112142 is a deficient number, since it is larger than the sum of its proper divisors (134980490).

212112142 is a wasteful number, since it uses less digits than its factorization.

212112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9641474.

The product of its digits is 64, while the sum is 16.

The square root of 212112142 is about 14564.0702415225. The cubic root of 212112142 is about 596.3783144566.

Adding to 212112142 its reverse (241211212), we get a palindrome (453323354).

The spelling of 212112142 in words is "two hundred twelve million, one hundred twelve thousand, one hundred forty-two".