42347087 has 2 divisors, whose sum is σ = 42347088. Its totient is φ = 42347086.

The previous prime is 42347059. The next prime is 42347167. The reversal of 42347087 is 78074324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42347087 - 2⁸ = 42346831 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42347587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21173543 + 21173544.

It is an arithmetic number, because the mean of its divisors is an integer number (21173544).

Almost surely, 2^42347087 is an apocalyptic number.

42347087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42347087 is an equidigital number, since it uses as much as digits as its factorization.

42347087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 42347087 is about 6507.4639453477. The cubic root of 42347087 is about 348.5575655871.

The spelling of 42347087 in words is "forty-two million, three hundred forty-seven thousand, eighty-seven".