247442159 has 2 divisors, whose sum is σ = 247442160. Its totient is φ = 247442158.

The previous prime is 247442147. The next prime is 247442179. The reversal of 247442159 is 951244742.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247442159 is a prime.

It is a super-2 number, since 2×247442159² = 122455244101162562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247442179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123721079 + 123721080.

It is an arithmetic number, because the mean of its divisors is an integer number (123721080).

Almost surely, 2^247442159 is an apocalyptic number.

247442159 is a deficient number, since it is larger than the sum of its proper divisors (1).

247442159 is an equidigital number, since it uses as much as digits as its factorization.

247442159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 247442159 is about 15730.2943074820. The cubic root of 247442159 is about 627.8047040031.

The spelling of 247442159 in words is "two hundred forty-seven million, four hundred forty-two thousand, one hundred fifty-nine".