12703421 has 4 divisors (see below), whose sum is σ = 13141500. Its totient is φ = 12265344.

The previous prime is 12703367. The next prime is 12703501. The reversal of 12703421 is 12430721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9765625 + 2937796 = 3125^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 12703421 - 2⁶ = 12703357 is a prime.

It is a super-2 number, since 2×12703421² = 322753810206482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12703393 and 12703402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723421) 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, 218996 + ... + 219053.

It is an arithmetic number, because the mean of its divisors is an integer number (3285375).

Almost surely, 2^12703421 is an apocalyptic number.

It is an amenable number.

12703421 is a deficient number, since it is larger than the sum of its proper divisors (438079).

12703421 is an equidigital number, since it uses as much as digits as its factorization.

12703421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438078.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12703421 is about 3564.1858817969. The cubic root of 12703421 is about 233.3316024815.

The spelling of 12703421 in words is "twelve million, seven hundred three thousand, four hundred twenty-one".