247242 has 16 divisors (see below), whose sum is σ = 501120. Its totient is φ = 81312.

The previous prime is 247241. The next prime is 247249. The reversal of 247242 is 242742.

It is a super-2 number, since 2×247242² = 122257213128, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247242.

It is not an unprimeable number, because it can be changed into a prime (247241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (31320).

2²⁴⁷²⁴² is an apocalyptic number.

247242 is an abundant number, since it is smaller than the sum of its proper divisors (253878).

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

247242 is a wasteful number, since it uses less digits than its factorization.

247242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its digits is 896, while the sum is 21.

The square root of 247242 is about 497.2343511866. The cubic root of 247242 is about 62.7635378694.

Adding to 247242 its reverse (242742), we get a palindrome (489984).

The spelling of 247242 in words is "two hundred forty-seven thousand, two hundred forty-two", and thus it is an iban number.