12421652 has 6 divisors (see below), whose sum is σ = 21737898. Its totient is φ = 6210824.

The previous prime is 12421639. The next prime is 12421681. The reversal of 12421652 is 25612421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9449476 + 2972176 = 3074^2 + 1724^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552703 + ... + 1552710.

It is an arithmetic number, because the mean of its divisors is an integer number (3622983).

Almost surely, 2^12421652 is an apocalyptic number.

It is an amenable number.

12421652 is a deficient number, since it is larger than the sum of its proper divisors (9316246).

12421652 is a wasteful number, since it uses less digits than its factorization.

12421652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105417 (or 3105415 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 12421652 is about 3524.4364088461. The cubic root of 12421652 is about 231.5935461545.

The spelling of 12421652 in words is "twelve million, four hundred twenty-one thousand, six hundred fifty-two".