212042140439 has 2 divisors, whose sum is σ = 212042140440. Its totient is φ = 212042140438.

The previous prime is 212042140393. The next prime is 212042140451. The reversal of 212042140439 is 934041240212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212042140439 is a prime.

It is a super-2 number, since 2×212042140439² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212041140439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106021070219 + 106021070220.

It is an arithmetic number, because the mean of its divisors is an integer number (106021070220).

Almost surely, 2^212042140439 is an apocalyptic number.

212042140439 is a deficient number, since it is larger than the sum of its proper divisors (1).

212042140439 is an equidigital number, since it uses as much as digits as its factorization.

212042140439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 212042140439 in words is "two hundred twelve billion, forty-two million, one hundred forty thousand, four hundred thirty-nine".