12139030 has 16 divisors (see below), whose sum is σ = 21999600. Its totient is φ = 4822432.

The previous prime is 12139021. The next prime is 12139033. The reversal of 12139030 is 3093121.

12139030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12138989 and 12139007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139033) 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, 2584 + ... + 5563.

It is an arithmetic number, because the mean of its divisors is an integer number (1374975).

Almost surely, 2^12139030 is an apocalyptic number.

12139030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12139030 is a deficient number, since it is larger than the sum of its proper divisors (9860570).

12139030 is a wasteful number, since it uses less digits than its factorization.

12139030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 12139030 is about 3484.1110774486. Note that the first 3 decimals coincide. The cubic root of 12139030 is about 229.8236202881.

The spelling of 12139030 in words is "twelve million, one hundred thirty-nine thousand, thirty".