212142877 has 2 divisors, whose sum is σ = 212142878. Its totient is φ = 212142876.

The previous prime is 212142857. The next prime is 212142911. The reversal of 212142877 is 778241212.

It is a happy number.

It is an a-pointer prime, because the next prime (212142911) can be obtained adding 212142877 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198556281 + 13586596 = 14091^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 212142877 - 2¹⁵ = 212110109 is a prime.

It is a super-3 number, since 3×212142877³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212142857) 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, 106071438 + 106071439.

It is an arithmetic number, because the mean of its divisors is an integer number (106071439).

Almost surely, 2^212142877 is an apocalyptic number.

It is an amenable number.

212142877 is a deficient number, since it is larger than the sum of its proper divisors (1).

212142877 is an equidigital number, since it uses as much as digits as its factorization.

212142877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544, while the sum is 34.

The square root of 212142877 is about 14565.1253684958. The cubic root of 212142877 is about 596.4071180917.

The spelling of 212142877 in words is "two hundred twelve million, one hundred forty-two thousand, eight hundred seventy-seven".