12159420 has 192 divisors, whose sum is σ = 44706816. Its totient is φ = 2396160.

The previous prime is 12159401. The next prime is 12159451. The reversal of 12159420 is 2495121.

12159420 = T₈₁₆ + T₈₁₇ + ... + T₈₅₀.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 92755 + ... + 92885.

It is an arithmetic number, because the mean of its divisors is an integer number (232848).

Almost surely, 2^12159420 is an apocalyptic number.

12159420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12159420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22353408).

12159420 is an abundant number, since it is smaller than the sum of its proper divisors (32547396).

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

12159420 is a wasteful number, since it uses less digits than its factorization.

12159420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12159420 is about 3487.0359906373. The cubic root of 12159420 is about 229.9522270028.

The spelling of 12159420 in words is "twelve million, one hundred fifty-nine thousand, four hundred twenty".