12057129 has 48 divisors (see below), whose sum is σ = 21295872. Its totient is φ = 6424704.

The previous prime is 12057121. The next prime is 12057139. The reversal of 12057129 is 92175021.

It is not a de Polignac number, because 12057129 - 2³ = 12057121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12057121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76719 + ... + 76875.

It is an arithmetic number, because the mean of its divisors is an integer number (443664).

Almost surely, 2^12057129 is an apocalyptic number.

It is an amenable number.

12057129 is a deficient number, since it is larger than the sum of its proper divisors (9238743).

12057129 is a wasteful number, since it uses less digits than its factorization.

12057129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12057129 is about 3472.3376851913. The cubic root of 12057129 is about 229.3055867049.

The spelling of 12057129 in words is "twelve million, fifty-seven thousand, one hundred twenty-nine".