845129 has 2 divisors, whose sum is σ = 845130. Its totient is φ = 845128.

The previous prime is 845111. The next prime is 845137. The reversal of 845129 is 921548.

845129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 126025 = 848^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 845129 - 2¹⁶ = 779593 is a prime.

It is equal to p₆₇₂₆₈ and since 845129 and 67268 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (845179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422564 + 422565.

It is an arithmetic number, because the mean of its divisors is an integer number (422565).

2⁸⁴⁵¹²⁹ is an apocalyptic number.

It is an amenable number.

845129 is a deficient number, since it is larger than the sum of its proper divisors (1).

845129 is an equidigital number, since it uses as much as digits as its factorization.

845129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 845129 is about 919.3089796146. The cubic root of 845129 is about 94.5455301629.

The spelling of 845129 in words is "eight hundred forty-five thousand, one hundred twenty-nine".