248139 has 12 divisors (see below), whose sum is σ = 364000. Its totient is φ = 162864.

The previous prime is 248137. The next prime is 248141. The reversal of 248139 is 931842.

It is an interprime number because it is at equal distance from previous prime (248137) and next prime (248141).

It is not a de Polignac number, because 248139 - 2¹ = 248137 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 248139.

It is not an unprimeable number, because it can be changed into a prime (248137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537 + ... + 885.

2²⁴⁸¹³⁹ is an apocalyptic number.

248139 is a deficient number, since it is larger than the sum of its proper divisors (115861).

248139 is a wasteful number, since it uses less digits than its factorization.

248139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 431 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 248139 is about 498.1355237282. The cubic root of 248139 is about 62.8393488101.

The spelling of 248139 in words is "two hundred forty-eight thousand, one hundred thirty-nine".