42494587 has 2 divisors, whose sum is σ = 42494588. Its totient is φ = 42494586.

The previous prime is 42494579. The next prime is 42494591. The reversal of 42494587 is 78549424.

42494587 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 42494587 - 2³ = 42494579 is a prime.

It is not a weakly prime, because it can be changed into another prime (42494527) 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, 21247293 + 21247294.

It is an arithmetic number, because the mean of its divisors is an integer number (21247294).

Almost surely, 2^42494587 is an apocalyptic number.

42494587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42494587 is an equidigital number, since it uses as much as digits as its factorization.

42494587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 42494587 is about 6518.7872338342. The cubic root of 42494587 is about 348.9617859490.

It can be divided in two parts, 4249 and 4587, that added together give a square (8836 = 94²).

The spelling of 42494587 in words is "forty-two million, four hundred ninety-four thousand, five hundred eighty-seven".