212724029 has 4 divisors (see below), whose sum is σ = 243113184. Its totient is φ = 182334876.

The previous prime is 212724013. The next prime is 212724049. The reversal of 212724029 is 920427212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212724029 - 2⁴ = 212724013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212723992 and 212724010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212724049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15194567 + ... + 15194580.

It is an arithmetic number, because the mean of its divisors is an integer number (60778296).

Almost surely, 2^212724029 is an apocalyptic number.

It is an amenable number.

212724029 is a deficient number, since it is larger than the sum of its proper divisors (30389155).

212724029 is an equidigital number, since it uses as much as digits as its factorization.

212724029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30389154.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 212724029 is about 14585.0618442295. The cubic root of 212724029 is about 596.9512280740.

The spelling of 212724029 in words is "two hundred twelve million, seven hundred twenty-four thousand, twenty-nine".