12100457 has 4 divisors (see below), whose sum is σ = 12124740. Its totient is φ = 12076176.

The previous prime is 12100441. The next prime is 12100471. The reversal of 12100457 is 75400121.

12100457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6431296 + 5669161 = 2536^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100457 - 2⁴ = 12100441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11378 + ... + 12395.

It is an arithmetic number, because the mean of its divisors is an integer number (3031185).

Almost surely, 2^12100457 is an apocalyptic number.

It is an amenable number.

12100457 is a deficient number, since it is larger than the sum of its proper divisors (24283).

12100457 is an equidigital number, since it uses as much as digits as its factorization.

12100457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24282.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12100457 is about 3478.5711146964. The cubic root of 12100457 is about 229.5799326976.

Adding to 12100457 its reverse (75400121), we get a palindrome (87500578).

The spelling of 12100457 in words is "twelve million, one hundred thousand, four hundred fifty-seven".