159420069 has 10 divisors (see below), whose sum is σ = 238146150. Its totient is φ = 106279992.

The previous prime is 159420043. The next prime is 159420071. The reversal of 159420069 is 960024951.

159420069 is a `hidden beast` number, since 1 + 594 + 2 + 0 + 0 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114704100 + 44715969 = 10710^2 + 6687^2 .

It is not a de Polignac number, because 159420069 - 2¹² = 159415973 is a prime.

It is a super-2 number, since 2×159420069² = 50829516799929522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159422069) 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 in 9 ways as a sum of consecutive naturals, for example, 983994 + ... + 984155.

It is an arithmetic number, because the mean of its divisors is an integer number (23814615).

Almost surely, 2^159420069 is an apocalyptic number.

It is an amenable number.

159420069 is a deficient number, since it is larger than the sum of its proper divisors (78726081).

159420069 is an equidigital number, since it uses as much as digits as its factorization.

159420069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968161 (or 1968152 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 159420069 is about 12626.1660451619. The cubic root of 159420069 is about 542.2268230425.

The spelling of 159420069 in words is "one hundred fifty-nine million, four hundred twenty thousand, sixty-nine".