211442029 has 2 divisors, whose sum is σ = 211442030. Its totient is φ = 211442028.

The previous prime is 211442009. The next prime is 211442071. The reversal of 211442029 is 920244112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 103489929 = 10390^2 + 10173^2 .

It is a cyclic number.

It is not a de Polignac number, because 211442029 - 2¹⁹ = 210917741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211441994 and 211442012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211442009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105721014 + 105721015.

It is an arithmetic number, because the mean of its divisors is an integer number (105721015).

Almost surely, 2^211442029 is an apocalyptic number.

It is an amenable number.

211442029 is a deficient number, since it is larger than the sum of its proper divisors (1).

211442029 is an equidigital number, since it uses as much as digits as its factorization.

211442029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 211442029 is about 14541.0463516213. The cubic root of 211442029 is about 595.7496180014.

The spelling of 211442029 in words is "two hundred eleven million, four hundred forty-two thousand, twenty-nine".