12100456 has 8 divisors (see below), whose sum is σ = 22688370. Its totient is φ = 6050224.

The previous prime is 12100441. The next prime is 12100471. The reversal of 12100456 is 65400121.

It is an interprime number because it is at equal distance from previous prime (12100441) and next prime (12100471).

It can be written as a sum of positive squares in only one way, i.e., 6502500 + 5597956 = 2550^2 + 2366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 756271 + ... + 756286.

Almost surely, 2^12100456 is an apocalyptic number.

It is an amenable number.

12100456 is a deficient number, since it is larger than the sum of its proper divisors (10587914).

12100456 is a wasteful number, since it uses less digits than its factorization.

12100456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512563 (or 1512559 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12100456 is about 3478.5709709592. The cubic root of 12100456 is about 229.5799263733.

Adding to 12100456 its reverse (65400121), we get a palindrome (77500577).

The spelling of 12100456 in words is "twelve million, one hundred thousand, four hundred fifty-six".