42579487 has 2 divisors, whose sum is σ = 42579488. Its totient is φ = 42579486.

The previous prime is 42579457. The next prime is 42579497. The reversal of 42579487 is 78497524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42579487 - 2⁷ = 42579359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42579457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21289743 + 21289744.

It is an arithmetic number, because the mean of its divisors is an integer number (21289744).

Almost surely, 2^42579487 is an apocalyptic number.

42579487 is a deficient number, since it is larger than the sum of its proper divisors (1).

42579487 is an equidigital number, since it uses as much as digits as its factorization.

42579487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 42579487 is about 6525.2959319865. The cubic root of 42579487 is about 349.1940284460.

The spelling of 42579487 in words is "forty-two million, five hundred seventy-nine thousand, four hundred eighty-seven".