12962421 has 6 divisors (see below), whose sum is σ = 18723510. Its totient is φ = 8641608.

The previous prime is 12962419. The next prime is 12962429. The reversal of 12962421 is 12426921.

12962421 is a `hidden beast` number, since 12 + 9 + 624 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 6275025 = 2586^2 + 2505^2 .

It is not a de Polignac number, because 12962421 - 2¹ = 12962419 is a prime.

It is a super-3 number, since 3×12962421³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12962429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720126 + ... + 720143.

It is an arithmetic number, because the mean of its divisors is an integer number (3120585).

Almost surely, 2^12962421 is an apocalyptic number.

It is an amenable number.

12962421 is a deficient number, since it is larger than the sum of its proper divisors (5761089).

12962421 is a wasteful number, since it uses less digits than its factorization.

12962421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440275 (or 1440272 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 12962421 is about 3600.3362342981. The cubic root of 12962421 is about 234.9066839400.

The spelling of 12962421 in words is "twelve million, nine hundred sixty-two thousand, four hundred twenty-one".