211142429 has 2 divisors, whose sum is σ = 211142430. Its totient is φ = 211142428.

The previous prime is 211142423. The next prime is 211142467. The reversal of 211142429 is 924241112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156825529 + 54316900 = 12523^2 + 7370^2 .

It is a cyclic number.

It is not a de Polignac number, because 211142429 - 2¹⁶ = 211076893 is a prime.

It is a super-2 number, since 2×211142429² = 89162250648040082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211142398 and 211142407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211142423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571214 + 105571215.

It is an arithmetic number, because the mean of its divisors is an integer number (105571215).

Almost surely, 2^211142429 is an apocalyptic number.

It is an amenable number.

211142429 is a deficient number, since it is larger than the sum of its proper divisors (1).

211142429 is an equidigital number, since it uses as much as digits as its factorization.

211142429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 211142429 is about 14530.7408276385. The cubic root of 211142429 is about 595.4681051375.

The spelling of 211142429 in words is "two hundred eleven million, one hundred forty-two thousand, four hundred twenty-nine".