12145146 has 16 divisors (see below), whose sum is σ = 26158944. Its totient is φ = 3736944.

The previous prime is 12145103. The next prime is 12145151. The reversal of 12145146 is 64154121.

It is a happy number.

It is a super-2 number, since 2×12145146² = 295009142722632, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77776 + ... + 77931.

It is an arithmetic number, because the mean of its divisors is an integer number (1634934).

Almost surely, 2^12145146 is an apocalyptic number.

12145146 is an abundant number, since it is smaller than the sum of its proper divisors (14013798).

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

12145146 is a wasteful number, since it uses less digits than its factorization.

12145146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155725.

The product of its digits is 960, while the sum is 24.

The square root of 12145146 is about 3484.9886656918. The cubic root of 12145146 is about 229.8622111054.

Adding to 12145146 its reverse (64154121), we get a palindrome (76299267).

The spelling of 12145146 in words is "twelve million, one hundred forty-five thousand, one hundred forty-six".