12129954 has 8 divisors (see below), whose sum is σ = 24259920. Its totient is φ = 4043316.

The previous prime is 12129937. The next prime is 12129989. The reversal of 12129954 is 45992121.

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

12129954 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010824 + ... + 1010835.

It is an arithmetic number, because the mean of its divisors is an integer number (3032490).

Almost surely, 2^12129954 is an apocalyptic number.

12129954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12129954 is a wasteful number, since it uses less digits than its factorization.

12129954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021664.

The product of its digits is 6480, while the sum is 33.

The square root of 12129954 is about 3482.8083495938. The cubic root of 12129954 is about 229.7663285264.

The spelling of 12129954 in words is "twelve million, one hundred twenty-nine thousand, nine hundred fifty-four".