842507 has 2 divisors, whose sum is σ = 842508. Its totient is φ = 842506.

The previous prime is 842497. The next prime is 842519. The reversal of 842507 is 705248.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842507 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842507.

It is not a weakly prime, because it can be changed into another prime (842587) 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, 421253 + 421254.

It is an arithmetic number, because the mean of its divisors is an integer number (421254).

2⁸⁴²⁵⁰⁷ is an apocalyptic number.

842507 is a deficient number, since it is larger than the sum of its proper divisors (1).

842507 is an equidigital number, since it uses as much as digits as its factorization.

842507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 842507 is about 917.8818006693. The cubic root of 842507 is about 94.4476535114.

The spelling of 842507 in words is "eight hundred forty-two thousand, five hundred seven".