247342 has 16 divisors (see below), whose sum is σ = 408960. Its totient is φ = 111672.

The previous prime is 247339. The next prime is 247343. The reversal of 247342 is 243742.

It is a super-2 number, since 2×247342² = 122356129928, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 4⁶ + 3¹¹ + 7² + 4⁸ + 2⁹ .

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247343) 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, 733 + ... + 1015.

It is an arithmetic number, because the mean of its divisors is an integer number (25560).

2²⁴⁷³⁴² is an apocalyptic number.

247342 is a deficient number, since it is larger than the sum of its proper divisors (161618).

247342 is a wasteful number, since it uses less digits than its factorization.

247342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its digits is 1344, while the sum is 22.

The square root of 247342 is about 497.3348972272. The cubic root of 247342 is about 62.7719985514.

Subtracting from 247342 its reverse (243742), we obtain a square (3600 = 60²).

The spelling of 247342 in words is "two hundred forty-seven thousand, three hundred forty-two", and thus it is an iban number.