159042823 has 2 divisors, whose sum is σ = 159042824. Its totient is φ = 159042822.

The previous prime is 159042817. The next prime is 159042841. The reversal of 159042823 is 328240951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159042823 - 2¹⁷ = 158911751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159042883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79521411 + 79521412.

It is an arithmetic number, because the mean of its divisors is an integer number (79521412).

Almost surely, 2^159042823 is an apocalyptic number.

159042823 is a deficient number, since it is larger than the sum of its proper divisors (1).

159042823 is an equidigital number, since it uses as much as digits as its factorization.

159042823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 159042823 is about 12611.2181410045. The cubic root of 159042823 is about 541.7987831210.

The spelling of 159042823 in words is "one hundred fifty-nine million, forty-two thousand, eight hundred twenty-three".