12145416 has 32 divisors (see below), whose sum is σ = 30456960. Its totient is φ = 4036032.

The previous prime is 12145387. The next prime is 12145417. The reversal of 12145416 is 61454121.

It is a happy number.

It is a super-2 number, since 2×12145416² = 295022259626112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is not an unprimeable number, because it can be changed into a prime (12145417) 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, 10566 + ... + 11658.

It is an arithmetic number, because the mean of its divisors is an integer number (951780).

Almost surely, 2^12145416 is an apocalyptic number.

It is an amenable number.

12145416 is an abundant number, since it is smaller than the sum of its proper divisors (18311544).

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

12145416 is a wasteful number, since it uses less digits than its factorization.

12145416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1561 counting only the distinct ones).

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

The square root of 12145416 is about 3485.0274030486. The cubic root of 12145416 is about 229.8639144563.

Adding to 12145416 its reverse (61454121), we get a palindrome (73599537).

It can be divided in two parts, 12145 and 416, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12145416 in words is "twelve million, one hundred forty-five thousand, four hundred sixteen".