42117659 has 2 divisors, whose sum is σ = 42117660. Its totient is φ = 42117658.

The previous prime is 42117643. The next prime is 42117667. The reversal of 42117659 is 95671124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42117659 - 2⁴ = 42117643 is a prime.

It is not a weakly prime, because it can be changed into another prime (42117689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21058829 + 21058830.

It is an arithmetic number, because the mean of its divisors is an integer number (21058830).

Almost surely, 2^42117659 is an apocalyptic number.

42117659 is a deficient number, since it is larger than the sum of its proper divisors (1).

42117659 is an equidigital number, since it uses as much as digits as its factorization.

42117659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 42117659 is about 6489.8119387236. The cubic root of 42117659 is about 347.9269537749.

The spelling of 42117659 in words is "forty-two million, one hundred seventeen thousand, six hundred fifty-nine".