42046087 has 2 divisors, whose sum is σ = 42046088. Its totient is φ = 42046086.

The previous prime is 42046007. The next prime is 42046099. The reversal of 42046087 is 78064024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42046087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42046007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21023043 + 21023044.

It is an arithmetic number, because the mean of its divisors is an integer number (21023044).

Almost surely, 2^42046087 is an apocalyptic number.

42046087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42046087 is an equidigital number, since it uses as much as digits as its factorization.

42046087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 42046087 is about 6484.2954127646. The cubic root of 42046087 is about 347.7297605835.

The spelling of 42046087 in words is "forty-two million, forty-six thousand, eighty-seven".