12139154 has 8 divisors (see below), whose sum is σ = 18465408. Its totient is φ = 5984020.

The previous prime is 12139151. The next prime is 12139177. The reversal of 12139154 is 45193121.

12139154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (12139151) 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, 42602 + ... + 42885.

It is an arithmetic number, because the mean of its divisors is an integer number (2308176).

Almost surely, 2^12139154 is an apocalyptic number.

12139154 is a deficient number, since it is larger than the sum of its proper divisors (6326254).

12139154 is an equidigital number, since it uses as much as digits as its factorization.

12139154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85560.

The product of its digits is 1080, while the sum is 26.

The square root of 12139154 is about 3484.1288724730. The cubic root of 12139154 is about 229.8244028337.

The spelling of 12139154 in words is "twelve million, one hundred thirty-nine thousand, one hundred fifty-four".