42876257 has 2 divisors, whose sum is σ = 42876258. Its totient is φ = 42876256.

The previous prime is 42876233. The next prime is 42876259. The reversal of 42876257 is 75267824.

42876257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36917776 + 5958481 = 6076^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 42876257 - 2¹⁸ = 42614113 is a prime.

Together with 42876259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42876259) 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, 21438128 + 21438129.

It is an arithmetic number, because the mean of its divisors is an integer number (21438129).

Almost surely, 2^42876257 is an apocalyptic number.

It is an amenable number.

42876257 is a deficient number, since it is larger than the sum of its proper divisors (1).

42876257 is an equidigital number, since it uses as much as digits as its factorization.

42876257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 41.

The square root of 42876257 is about 6547.9964111169. The cubic root of 42876257 is about 350.0034203747.

The spelling of 42876257 in words is "forty-two million, eight hundred seventy-six thousand, two hundred fifty-seven".