12145494 has 8 divisors (see below), whose sum is σ = 24291000. Its totient is φ = 4048496.

The previous prime is 12145493. The next prime is 12145501. The reversal of 12145494 is 49454121.

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

12145494 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145493) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1012119 + ... + 1012130.

It is an arithmetic number, because the mean of its divisors is an integer number (3036375).

Almost surely, 2^12145494 is an apocalyptic number.

12145494 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.

12145494 is a wasteful number, since it uses less digits than its factorization.

12145494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024254.

The product of its digits is 5760, while the sum is 30.

The square root of 12145494 is about 3485.0385937605. The cubic root of 12145494 is about 229.8644065308.

The spelling of 12145494 in words is "twelve million, one hundred forty-five thousand, four hundred ninety-four".