12901072 has 10 divisors (see below), whose sum is σ = 24995858. Its totient is φ = 6450528.

The previous prime is 12901043. The next prime is 12901081. The reversal of 12901072 is 27010921.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 1449616 = 3384^2 + 1204^2 .

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

It is a congruent number.

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, 403143 + ... + 403174.

Almost surely, 2^12901072 is an apocalyptic number.

It is an amenable number.

12901072 is a deficient number, since it is larger than the sum of its proper divisors (12094786).

12901072 is an equidigital number, since it uses as much as digits as its factorization.

12901072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806325 (or 806319 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 12901072 is about 3591.8062308538. The cubic root of 12901072 is about 234.5355062219.

Adding to 12901072 its reverse (27010921), we get a palindrome (39911993).

The spelling of 12901072 in words is "twelve million, nine hundred one thousand, seventy-two".