12174252420 has 384 divisors, whose sum is σ = 39797194752. Its totient is φ = 2753625600.

The previous prime is 12174252397. The next prime is 12174252427. The reversal of 12174252420 is 2425247121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12174252427) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 113778007 + ... + 113778113.

It is an arithmetic number, because the mean of its divisors is an integer number (103638528).

Almost surely, 2^12174252420 is an apocalyptic number.

12174252420 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 12174252420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19898597376).

12174252420 is an abundant number, since it is smaller than the sum of its proper divisors (27622942332).

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

12174252420 is a wasteful number, since it uses less digits than its factorization.

12174252420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

Adding to 12174252420 its reverse (2425247121), we get a palindrome (14599499541).

The spelling of 12174252420 in words is "twelve billion, one hundred seventy-four million, two hundred fifty-two thousand, four hundred twenty".