12345457 has 16 divisors (see below), whose sum is σ = 13461120. Its totient is φ = 11290752.

The previous prime is 12345439. The next prime is 12345479. The reversal of 12345457 is 75454321.

12345457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12345457 - 2¹⁵ = 12312689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12345427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75658 + ... + 75820.

It is an arithmetic number, because the mean of its divisors is an integer number (841320).

Almost surely, 2^12345457 is an apocalyptic number.

It is an amenable number.

12345457 is a deficient number, since it is larger than the sum of its proper divisors (1115663).

12345457 is a wasteful number, since it uses less digits than its factorization.

12345457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its digits is 16800, while the sum is 31.

The square root of 12345457 is about 3513.6102515789. The cubic root of 12345457 is about 231.1190393624.

Adding to 12345457 its reverse (75454321), we get a palindrome (87799778).

The spelling of 12345457 in words is "twelve million, three hundred forty-five thousand, four hundred fifty-seven".