12602421 has 12 divisors (see below), whose sum is σ = 19603948. Its totient is φ = 7755264.

The previous prime is 12602411. The next prime is 12602431. The reversal of 12602421 is 12420621.

12602421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12602411) and next prime (12602431).

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 4901796 = 2775^2 + 2214^2 .

It is not a de Polignac number, because 12602421 - 2⁹ = 12601909 is a prime.

It is a super-2 number, since 2×12602421² = 317642030122482, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12602394 and 12602403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12602411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53740 + ... + 53973.

Almost surely, 2^12602421 is an apocalyptic number.

It is an amenable number.

12602421 is a deficient number, since it is larger than the sum of its proper divisors (7001527).

12602421 is a wasteful number, since it uses less digits than its factorization.

12602421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107732 (or 107729 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12602421 is about 3549.9888732220. The cubic root of 12602421 is about 232.7115798587.

The spelling of 12602421 in words is "twelve million, six hundred two thousand, four hundred twenty-one".