42807587 has 2 divisors, whose sum is σ = 42807588. Its totient is φ = 42807586.

The previous prime is 42807539. The next prime is 42807601. The reversal of 42807587 is 78570824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42807587 - 2¹⁸ = 42545443 is a prime.

It is a super-3 number, since 3×42807587³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42807287) 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, 21403793 + 21403794.

It is an arithmetic number, because the mean of its divisors is an integer number (21403794).

Almost surely, 2^42807587 is an apocalyptic number.

42807587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42807587 is an equidigital number, since it uses as much as digits as its factorization.

42807587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 42807587 is about 6542.7507212181. The cubic root of 42807587 is about 349.8164670411.

The spelling of 42807587 in words is "forty-two million, eight hundred seven thousand, five hundred eighty-seven".