12421077 has 8 divisors (see below), whose sum is σ = 17132640. Its totient is φ = 7995120.

The previous prime is 12421061. The next prime is 12421099. The reversal of 12421077 is 77012421.

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

It is not a de Polignac number, because 12421077 - 2⁴ = 12421061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71299 + ... + 71472.

It is an arithmetic number, because the mean of its divisors is an integer number (2141580).

Almost surely, 2^12421077 is an apocalyptic number.

It is an amenable number.

12421077 is a deficient number, since it is larger than the sum of its proper divisors (4711563).

12421077 is a wasteful number, since it uses less digits than its factorization.

12421077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142803.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 12421077 is about 3524.3548345761. The cubic root of 12421077 is about 231.5899726002.

Adding to 12421077 its reverse (77012421), we get a palindrome (89433498).

The spelling of 12421077 in words is "twelve million, four hundred twenty-one thousand, seventy-seven".