20412120 has 32 divisors (see below), whose sum is σ = 61236720. Its totient is φ = 5443200.

The previous prime is 20412113. The next prime is 20412149. The reversal of 20412120 is 2121402.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20412096 and 20412105.

It is a congruent number.

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, 84931 + ... + 85170.

Almost surely, 2^20412120 is an apocalyptic number.

20412120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412120 is an abundant number, since it is smaller than the sum of its proper divisors (40824600).

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

20412120 is a wasteful number, since it uses less digits than its factorization.

20412120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170115 (or 170111 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20412120 is about 4517.9774235824. The cubic root of 20412120 is about 273.2935430214.

Adding to 20412120 its reverse (2121402), we get a palindrome (22533522).

The spelling of 20412120 in words is "twenty million, four hundred twelve thousand, one hundred twenty".