12451020 has 24 divisors (see below), whose sum is σ = 34863024. Its totient is φ = 3320256.

The previous prime is 12451013. The next prime is 12451039. The reversal of 12451020 is 2015421.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103699 + ... + 103818.

It is an arithmetic number, because the mean of its divisors is an integer number (1452626).

Almost surely, 2^12451020 is an apocalyptic number.

12451020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12451020 is an abundant number, since it is smaller than the sum of its proper divisors (22412004).

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

12451020 is a wasteful number, since it uses less digits than its factorization.

12451020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207529 (or 207527 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12451020 is about 3528.6002890665. The cubic root of 12451020 is about 231.7759181979.

Adding to 12451020 its reverse (2015421), we get a palindrome (14466441).

The spelling of 12451020 in words is "twelve million, four hundred fifty-one thousand, twenty".