271248139 has 4 divisors (see below), whose sum is σ = 277019424. Its totient is φ = 265476856.

The previous prime is 271248119. The next prime is 271248143. The reversal of 271248139 is 931842172.

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 271248139 - 2¹¹ = 271246091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 271248098 and 271248107.

It is not an unprimeable number, because it can be changed into a prime (271248119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885572 + ... + 2885665.

It is an arithmetic number, because the mean of its divisors is an integer number (69254856).

Almost surely, 2^271248139 is an apocalyptic number.

271248139 is a deficient number, since it is larger than the sum of its proper divisors (5771285).

271248139 is an equidigital number, since it uses as much as digits as its factorization.

271248139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771284.

The product of its digits is 24192, while the sum is 37.

The square root of 271248139 is about 16469.6125941080. The cubic root of 271248139 is about 647.3248147884.

The spelling of 271248139 in words is "two hundred seventy-one million, two hundred forty-eight thousand, one hundred thirty-nine".