247421246 has 16 divisors (see below), whose sum is σ = 381471120. Its totient is φ = 120310080.

The previous prime is 247421233. The next prime is 247421263. The reversal of 247421246 is 642124742.

It is a super-2 number, since 2×247421246² = 122434545944385032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 22251.

It is an arithmetic number, because the mean of its divisors is an integer number (23841945).

Almost surely, 2^247421246 is an apocalyptic number.

247421246 is a deficient number, since it is larger than the sum of its proper divisors (134049874).

247421246 is a wasteful number, since it uses less digits than its factorization.

247421246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22939.

The product of its digits is 21504, while the sum is 32.

The square root of 247421246 is about 15729.6295569858. The cubic root of 247421246 is about 627.7870168397.

Adding to 247421246 its reverse (642124742), we get a palindrome (889545988).

The spelling of 247421246 in words is "two hundred forty-seven million, four hundred twenty-one thousand, two hundred forty-six".