212023429 has 2 divisors, whose sum is σ = 212023430. Its totient is φ = 212023428.

The previous prime is 212023387. The next prime is 212023447. The reversal of 212023429 is 924320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128300929 + 83722500 = 11327^2 + 9150^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023429 - 2¹⁵ = 211990661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212023829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011714 + 106011715.

It is an arithmetic number, because the mean of its divisors is an integer number (106011715).

Almost surely, 2^212023429 is an apocalyptic number.

It is an amenable number.

212023429 is a deficient number, since it is larger than the sum of its proper divisors (1).

212023429 is an equidigital number, since it uses as much as digits as its factorization.

212023429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 212023429 is about 14561.0243114968. The cubic root of 212023429 is about 596.2951605072.

The spelling of 212023429 in words is "two hundred twelve million, twenty-three thousand, four hundred twenty-nine".