212042477 has 2 divisors, whose sum is σ = 212042478. Its totient is φ = 212042476.

The previous prime is 212042459. The next prime is 212042569. The reversal of 212042477 is 774240212.

212042477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171452836 + 40589641 = 13094^2 + 6371^2 .

It is a cyclic number.

It is not a de Polignac number, because 212042477 - 2¹⁸ = 211780333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212042407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106021238 + 106021239.

It is an arithmetic number, because the mean of its divisors is an integer number (106021239).

Almost surely, 2^212042477 is an apocalyptic number.

It is an amenable number.

212042477 is a deficient number, since it is larger than the sum of its proper divisors (1).

212042477 is an equidigital number, since it uses as much as digits as its factorization.

212042477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 212042477 is about 14561.6783716713. The cubic root of 212042477 is about 596.3130168516.

Adding to 212042477 its reverse (774240212), we get a palindrome (986282689).

The spelling of 212042477 in words is "two hundred twelve million, forty-two thousand, four hundred seventy-seven".