12842920 has 16 divisors (see below), whose sum is σ = 28896660. Its totient is φ = 5137152.

The previous prime is 12842887. The next prime is 12842923. The reversal of 12842920 is 2924821.

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 857476 = 3462^2 + 926^2 .

It is not an unprimeable number, because it can be changed into a prime (12842923) 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, 160497 + ... + 160576.

Almost surely, 2^12842920 is an apocalyptic number.

12842920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12842920 is an abundant number, since it is smaller than the sum of its proper divisors (16053740).

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

12842920 is a wasteful number, since it uses less digits than its factorization.

12842920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321084 (or 321080 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12842920 is about 3583.7019965393. The cubic root of 12842920 is about 234.1825832882.

The spelling of 12842920 in words is "twelve million, eight hundred forty-two thousand, nine hundred twenty".