12405051 has 6 divisors (see below), whose sum is σ = 17918420. Its totient is φ = 8270028.

The previous prime is 12405031. The next prime is 12405067. The reversal of 12405051 is 15050421.

It is not a de Polignac number, because 12405051 - 2¹⁷ = 12273979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12405031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 689161 + ... + 689178.

Almost surely, 2^12405051 is an apocalyptic number.

12405051 is a deficient number, since it is larger than the sum of its proper divisors (5513369).

12405051 is a wasteful number, since it uses less digits than its factorization.

12405051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378345 (or 1378342 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12405051 is about 3522.0804931177. The cubic root of 12405051 is about 231.4903285770.

Adding to 12405051 its reverse (15050421), we get a palindrome (27455472).

The spelling of 12405051 in words is "twelve million, four hundred five thousand, fifty-one".