142559161 has 4 divisors (see below), whose sum is σ = 150945012. Its totient is φ = 134173312.

The previous prime is 142559159. The next prime is 142559191. The reversal of 142559161 is 161955241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130965136 + 11594025 = 11444^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 142559161 - 2¹ = 142559159 is a prime.

It is a super-2 number, since 2×142559161² = 40646228770047842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142559191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4192900 + ... + 4192933.

It is an arithmetic number, because the mean of its divisors is an integer number (37736253).

Almost surely, 2^142559161 is an apocalyptic number.

It is an amenable number.

142559161 is a deficient number, since it is larger than the sum of its proper divisors (8385851).

142559161 is an equidigital number, since it uses as much as digits as its factorization.

142559161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8385850.

The product of its digits is 10800, while the sum is 34.

The square root of 142559161 is about 11939.8141107808. The cubic root of 142559161 is about 522.3942366610.

The spelling of 142559161 in words is "one hundred forty-two million, five hundred fifty-nine thousand, one hundred sixty-one".