12421080 has 256 divisors, whose sum is σ = 49766400. Its totient is φ = 2695680.

The previous prime is 12421061. The next prime is 12421099. The reversal of 12421080 is 8012421.

12421080 = T₂₂₄ + T₂₂₅ + ... + T₄₄₀.

It is an interprime number because it is at equal distance from previous prime (12421061) and next prime (12421099).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234334 + ... + 234386.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

Almost surely, 2^12421080 is an apocalyptic number.

12421080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24883200).

12421080 is an abundant number, since it is smaller than the sum of its proper divisors (37345320).

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

12421080 is a wasteful number, since it uses less digits than its factorization.

12421080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12421080 is about 3524.3552601859. The cubic root of 12421080 is about 231.5899912451.

The spelling of 12421080 in words is "twelve million, four hundred twenty-one thousand, eighty".