212126140 has 48 divisors (see below), whose sum is σ = 456085728. Its totient is φ = 82843904.

The previous prime is 212126113. The next prime is 212126197. The reversal of 212126140 is 41621212.

212126140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310239 + ... + 310921.

It is an arithmetic number, because the mean of its divisors is an integer number (9501786).

Almost surely, 2^212126140 is an apocalyptic number.

212126140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212126140 is an abundant number, since it is smaller than the sum of its proper divisors (243959588).

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

212126140 is a wasteful number, since it uses less digits than its factorization.

212126140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 212126140 is about 14564.5507998016. The cubic root of 212126140 is about 596.3914331775.

Adding to 212126140 its reverse (41621212), we get a palindrome (253747352).

The spelling of 212126140 in words is "two hundred twelve million, one hundred twenty-six thousand, one hundred forty".