12421650 has 24 divisors (see below), whose sum is σ = 30806064. Its totient is φ = 3312400.

The previous prime is 12421639. The next prime is 12421681. The reversal of 12421650 is 5612421.

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 in 11 ways as a sum of consecutive naturals, for example, 41256 + ... + 41555.

It is an arithmetic number, because the mean of its divisors is an integer number (1283586).

Almost surely, 2^12421650 is an apocalyptic number.

12421650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12421650 is an abundant number, since it is smaller than the sum of its proper divisors (18384414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12421650 is a wasteful number, since it uses less digits than its factorization.

12421650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82826 (or 82821 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12421650 is about 3524.4361251128. The cubic root of 12421650 is about 231.5935337249.

It can be divided in two parts, 1242 and 1650, that multiplied together give a triangular number (2049300 = T₂₀₂₄).

The spelling of 12421650 in words is "twelve million, four hundred twenty-one thousand, six hundred fifty".