247120 has 20 divisors (see below), whose sum is σ = 574740. Its totient is φ = 98816.

The previous prime is 247099. The next prime is 247141. The reversal of 247120 is 21742.

It is an interprime number because it is at equal distance from previous prime (247099) and next prime (247141).

It can be written as a sum of positive squares in 2 ways, for example, as 166464 + 80656 = 408^2 + 284^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×247120² = 122136588800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 247094 and 247103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465 + ... + 1624.

It is an arithmetic number, because the mean of its divisors is an integer number (28737).

2²⁴⁷¹²⁰ is an apocalyptic number.

247120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247120 is an abundant number, since it is smaller than the sum of its proper divisors (327620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247120 is a wasteful number, since it uses less digits than its factorization.

247120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102 (or 3096 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 247120 is about 497.1116574775. Note that the first 3 decimals coincide. The cubic root of 247120 is about 62.7532127475.

Adding to 247120 its reverse (21742), we get a palindrome (268862).

The spelling of 247120 in words is "two hundred forty-seven thousand, one hundred twenty", and thus it is an iban number.