12921074 has 8 divisors (see below), whose sum is σ = 19396908. Its totient is φ = 6455440.

The previous prime is 12921061. The next prime is 12921089. The reversal of 12921074 is 47012921.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 970225 = 3457^2 + 985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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

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 in 3 ways as a sum of consecutive naturals, for example, 3344 + ... + 6084.

Almost surely, 2^12921074 is an apocalyptic number.

12921074 is a deficient number, since it is larger than the sum of its proper divisors (6475834).

12921074 is a wasteful number, since it uses less digits than its factorization.

12921074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12921074 is about 3594.5895454141. The cubic root of 12921074 is about 234.6566526625.

Adding to 12921074 its reverse (47012921), we get a palindrome (59933995).

The spelling of 12921074 in words is "twelve million, nine hundred twenty-one thousand, seventy-four".