42558007 has 2 divisors, whose sum is σ = 42558008. Its totient is φ = 42558006.

The previous prime is 42557923. The next prime is 42558017. The reversal of 42558007 is 70085524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42558007 - 2¹¹ = 42555959 is a prime.

It is a super-2 number, since 2×42558007² = 3622367919624098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42558007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42558017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21279003 + 21279004.

It is an arithmetic number, because the mean of its divisors is an integer number (21279004).

Almost surely, 2^42558007 is an apocalyptic number.

42558007 is a deficient number, since it is larger than the sum of its proper divisors (1).

42558007 is an equidigital number, since it uses as much as digits as its factorization.

42558007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 42558007 is about 6523.6498219938. The cubic root of 42558007 is about 349.1352994672.

The spelling of 42558007 in words is "forty-two million, five hundred fifty-eight thousand, seven".