212443142 has 16 divisors (see below), whose sum is σ = 336072240. Its totient is φ = 100440288.

The previous prime is 212443141. The next prime is 212443151. The reversal of 212443142 is 241344212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212443141) 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, 16148 + ... + 26184.

It is an arithmetic number, because the mean of its divisors is an integer number (21004515).

Almost surely, 2^212443142 is an apocalyptic number.

212443142 is a deficient number, since it is larger than the sum of its proper divisors (123629098).

212443142 is a wasteful number, since it uses less digits than its factorization.

212443142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10615.

The product of its digits is 1536, while the sum is 23.

The square root of 212443142 is about 14575.4293933318. The cubic root of 212443142 is about 596.6883684182.

Adding to 212443142 its reverse (241344212), we get a palindrome (453787354).

The spelling of 212443142 in words is "two hundred twelve million, four hundred forty-three thousand, one hundred forty-two".