247123 has 4 divisors (see below), whose sum is σ = 253840. Its totient is φ = 240408.

The previous prime is 247099. The next prime is 247141. The reversal of 247123 is 321742.

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 247123 - 2⁹ = 246611 is a prime.

It is a super-2 number, since 2×247123² = 122139554258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁶ + 1 + 7³ + 2¹⁵ + 3¹¹ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247123.

It is not an unprimeable number, because it can be changed into a prime (247183) 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, 3303 + ... + 3376.

It is an arithmetic number, because the mean of its divisors is an integer number (63460).

2²⁴⁷¹²³ is an apocalyptic number.

247123 is a deficient number, since it is larger than the sum of its proper divisors (6717).

247123 is an equidigital number, since it uses as much as digits as its factorization.

247123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716.

The product of its digits is 336, while the sum is 19.

The square root of 247123 is about 497.1146748991. The cubic root of 247123 is about 62.7534666847.

Adding to 247123 its reverse (321742), we get a palindrome (568865).

It can be divided in two parts, 247 and 123, that multiplied together give a triangular number (30381 = T₂₄₆).

The spelling of 247123 in words is "two hundred forty-seven thousand, one hundred twenty-three", and thus it is an iban number.