159242047 has 4 divisors (see below), whose sum is σ = 159522480. Its totient is φ = 158961616.

The previous prime is 159242023. The next prime is 159242053. The reversal of 159242047 is 740242951.

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

It is a cyclic number.

It is not a de Polignac number, because 159242047 - 2⁷ = 159241919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159242747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139363 + ... + 140500.

It is an arithmetic number, because the mean of its divisors is an integer number (39880620).

Almost surely, 2^159242047 is an apocalyptic number.

159242047 is a deficient number, since it is larger than the sum of its proper divisors (280433).

159242047 is an equidigital number, since it uses as much as digits as its factorization.

159242047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280432.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 159242047 is about 12619.1143508568. The cubic root of 159242047 is about 542.0249156813.

Adding to 159242047 its reverse (740242951), we get a palindrome (899484998).

It can be divided in two parts, 15924 and 2047, that added together give a palindrome (17971).

The spelling of 159242047 in words is "one hundred fifty-nine million, two hundred forty-two thousand, forty-seven".