212132429 has 2 divisors, whose sum is σ = 212132430. Its totient is φ = 212132428.

The previous prime is 212132423. The next prime is 212132449. The reversal of 212132429 is 924231212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 96569929 = 10750^2 + 9827^2 .

It is a cyclic number.

It is not a de Polignac number, because 212132429 - 2⁴ = 212132413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212132398 and 212132407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212132423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066214 + 106066215.

It is an arithmetic number, because the mean of its divisors is an integer number (106066215).

Almost surely, 2^212132429 is an apocalyptic number.

It is an amenable number.

212132429 is a deficient number, since it is larger than the sum of its proper divisors (1).

212132429 is an equidigital number, since it uses as much as digits as its factorization.

212132429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 212132429 is about 14564.7666991270. The cubic root of 212132429 is about 596.3973269485.

The spelling of 212132429 in words is "two hundred twelve million, one hundred thirty-two thousand, four hundred twenty-nine".