212942424 has 64 divisors (see below), whose sum is σ = 564940800. Its totient is φ = 66697344.

The previous prime is 212942423. The next prime is 212942453. The reversal of 212942424 is 424249212.

212942424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212942391 and 212942400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212942423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56074 + ... + 59750.

It is an arithmetic number, because the mean of its divisors is an integer number (8827200).

Almost surely, 2^212942424 is an apocalyptic number.

212942424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212942424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282470400).

212942424 is an abundant number, since it is smaller than the sum of its proper divisors (351998376).

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

212942424 is a wasteful number, since it uses less digits than its factorization.

212942424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3828 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 212942424 is about 14592.5468647526. The cubic root of 212942424 is about 597.1554466162.

The spelling of 212942424 in words is "two hundred twelve million, nine hundred forty-two thousand, four hundred twenty-four".