42687877 has 2 divisors, whose sum is σ = 42687878. Its totient is φ = 42687876.

The previous prime is 42687859. The next prime is 42687881. The reversal of 42687877 is 77878624.

It is a happy number.

42687877 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., 38365636 + 4322241 = 6194^2 + 2079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42687877 is a prime.

It is a super-3 number, since 3×42687877³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42687877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42687817) 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, 21343938 + 21343939.

It is an arithmetic number, because the mean of its divisors is an integer number (21343939).

Almost surely, 2^42687877 is an apocalyptic number.

It is an amenable number.

42687877 is a deficient number, since it is larger than the sum of its proper divisors (1).

42687877 is an equidigital number, since it uses as much as digits as its factorization.

42687877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1053696, while the sum is 49.

The square root of 42687877 is about 6533.5960236305. The cubic root of 42687877 is about 349.4900792175.

The spelling of 42687877 in words is "forty-two million, six hundred eighty-seven thousand, eight hundred seventy-seven".