12442545 has 64 divisors (see below), whose sum is σ = 23639040. Its totient is φ = 6200064.

The previous prime is 12442531. The next prime is 12442553. The reversal of 12442545 is 54524421.

It is not a de Polignac number, because 12442545 - 2⁵ = 12442513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234739 + ... + 234791.

It is an arithmetic number, because the mean of its divisors is an integer number (369360).

Almost surely, 2^12442545 is an apocalyptic number.

12442545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12442545 is a deficient number, since it is larger than the sum of its proper divisors (11196495).

12442545 is a wasteful number, since it uses less digits than its factorization.

12442545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 145 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 12442545 is about 3527.3991835345. The cubic root of 12442545 is about 231.7233188458.

Adding to 12442545 its reverse (54524421), we get a palindrome (66966966).

The spelling of 12442545 in words is "twelve million, four hundred forty-two thousand, five hundred forty-five".