12840130 has 16 divisors (see below), whose sum is σ = 23342904. Its totient is φ = 5084800.

The previous prime is 12840109. The next prime is 12840131. The reversal of 12840130 is 3104821.

12840130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12694969 + 145161 = 3563^2 + 381^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12840098 and 12840107.

It is not an unprimeable number, because it can be changed into a prime (12840131) 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, 5347 + ... + 7366.

Almost surely, 2^12840130 is an apocalyptic number.

12840130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12840130 is a deficient number, since it is larger than the sum of its proper divisors (10502774).

12840130 is a wasteful number, since it uses less digits than its factorization.

12840130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12821.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12840130 is about 3583.3127131190. The cubic root of 12840130 is about 234.1656240939.

Adding to 12840130 its reverse (3104821), we get a palindrome (15944951).

The spelling of 12840130 in words is "twelve million, eight hundred forty thousand, one hundred thirty".