42877141 has 2 divisors, whose sum is σ = 42877142. Its totient is φ = 42877140.

The previous prime is 42877139. The next prime is 42877151. The reversal of 42877141 is 14177824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41602500 + 1274641 = 6450^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 42877141 - 2¹ = 42877139 is a prime.

Together with 42877139, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42877097 and 42877106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42877151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438570 + 21438571.

It is an arithmetic number, because the mean of its divisors is an integer number (21438571).

Almost surely, 2^42877141 is an apocalyptic number.

It is an amenable number.

42877141 is a deficient number, since it is larger than the sum of its proper divisors (1).

42877141 is an equidigital number, since it uses as much as digits as its factorization.

42877141 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 42877141 is about 6548.0639123332. The cubic root of 42877141 is about 350.0058257534.

The spelling of 42877141 in words is "forty-two million, eight hundred seventy-seven thousand, one hundred forty-one".