12143930 has 8 divisors (see below), whose sum is σ = 21859092. Its totient is φ = 4857568.

The previous prime is 12143927. The next prime is 12143939. The reversal of 12143930 is 3934121.

It can be written as a sum of positive squares in 2 ways, for example, as 12117361 + 26569 = 3481^2 + 163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12143896 and 12143905.

It is not an unprimeable number, because it can be changed into a prime (12143939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607187 + ... + 607206.

Almost surely, 2^12143930 is an apocalyptic number.

12143930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12143930 is a deficient number, since it is larger than the sum of its proper divisors (9715162).

12143930 is a wasteful number, since it uses less digits than its factorization.

12143930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214400.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12143930 is about 3484.8141987773. The cubic root of 12143930 is about 229.8545394046.

The spelling of 12143930 in words is "twelve million, one hundred forty-three thousand, nine hundred thirty".