42687511 has 2 divisors, whose sum is σ = 42687512. Its totient is φ = 42687510.

The previous prime is 42687499. The next prime is 42687521. The reversal of 42687511 is 11578624.

42687511 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 is a cyclic number.

It is not a de Polignac number, because 42687511 - 2⁵ = 42687479 is a prime.

It is a super-3 number, since 3×42687511³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42687521) 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, 21343755 + 21343756.

It is an arithmetic number, because the mean of its divisors is an integer number (21343756).

Almost surely, 2^42687511 is an apocalyptic number.

42687511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42687511 is an equidigital number, since it uses as much as digits as its factorization.

42687511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 42687511 is about 6533.5680144925. The cubic root of 42687511 is about 349.4890803880.

The spelling of 42687511 in words is "forty-two million, six hundred eighty-seven thousand, five hundred eleven".