12057409 has 8 divisors (see below), whose sum is σ = 14840000. Its totient is φ = 9539856.

The previous prime is 12057407. The next prime is 12057431. The reversal of 12057409 is 90475021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12057409 - 2¹ = 12057407 is a prime.

It is a super-2 number, since 2×12057409² = 290762223586562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12057401) 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, 66159 + ... + 66340.

It is an arithmetic number, because the mean of its divisors is an integer number (1855000).

Almost surely, 2^12057409 is an apocalyptic number.

It is an amenable number.

12057409 is a deficient number, since it is larger than the sum of its proper divisors (2782591).

12057409 is a wasteful number, since it uses less digits than its factorization.

12057409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132519.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12057409 is about 3472.3780036165. The cubic root of 12057409 is about 229.3073617286.

The spelling of 12057409 in words is "twelve million, fifty-seven thousand, four hundred nine".