12520419 has 4 divisors (see below), whose sum is σ = 16693896. Its totient is φ = 8346944.

The previous prime is 12520399. The next prime is 12520421. The reversal of 12520419 is 91402521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12520419 - 2⁸ = 12520163 is a prime.

It is a super-2 number, since 2×12520419² = 313521783871122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12520499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086734 + ... + 2086739.

It is an arithmetic number, because the mean of its divisors is an integer number (4173474).

Almost surely, 2^12520419 is an apocalyptic number.

12520419 is a deficient number, since it is larger than the sum of its proper divisors (4173477).

12520419 is an equidigital number, since it uses as much as digits as its factorization.

12520419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173476.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12520419 is about 3538.4204102961. The cubic root of 12520419 is about 232.2057417376.

The spelling of 12520419 in words is "twelve million, five hundred twenty thousand, four hundred nineteen".