159142397 has 2 divisors, whose sum is σ = 159142398. Its totient is φ = 159142396.

The previous prime is 159142391. The next prime is 159142421. The reversal of 159142397 is 793241951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154902916 + 4239481 = 12446^2 + 2059^2 .

It is an emirp because it is prime and its reverse (793241951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159142397 - 2⁴ = 159142381 is a prime.

It is a super-4 number, since 4×159142397⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159142391) 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 as a sum of consecutive naturals, namely, 79571198 + 79571199.

It is an arithmetic number, because the mean of its divisors is an integer number (79571199).

Almost surely, 2^159142397 is an apocalyptic number.

It is an amenable number.

159142397 is a deficient number, since it is larger than the sum of its proper divisors (1).

159142397 is an equidigital number, since it uses as much as digits as its factorization.

159142397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 159142397 is about 12615.1653576162. The cubic root of 159142397 is about 541.9118298591.

The spelling of 159142397 in words is "one hundred fifty-nine million, one hundred forty-two thousand, three hundred ninety-seven".