12457145 has 16 divisors (see below), whose sum is σ = 15724800. Its totient is φ = 9455424.

The previous prime is 12457127. The next prime is 12457157. The reversal of 12457145 is 54175421.

It is a cyclic number.

It is not a de Polignac number, because 12457145 - 2¹⁶ = 12391609 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 16772 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^12457145 is an apocalyptic number.

It is an amenable number.

12457145 is a deficient number, since it is larger than the sum of its proper divisors (3267655).

12457145 is a wasteful number, since it uses less digits than its factorization.

12457145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its digits is 5600, while the sum is 29.

The square root of 12457145 is about 3529.4680902368. The cubic root of 12457145 is about 231.8139176222.

The spelling of 12457145 in words is "twelve million, four hundred fifty-seven thousand, one hundred forty-five".