412120820 has 24 divisors (see below), whose sum is σ = 893372928. Its totient is φ = 159530400.

The previous prime is 412120799. The next prime is 412120853. The reversal of 412120820 is 28021214.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 412120792 and 412120801.

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, 331736 + ... + 332975.

It is an arithmetic number, because the mean of its divisors is an integer number (37223872).

Almost surely, 2^412120820 is an apocalyptic number.

It is an amenable number.

412120820 is an abundant number, since it is smaller than the sum of its proper divisors (481252108).

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

412120820 is a wasteful number, since it uses less digits than its factorization.

412120820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664751 (or 664749 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 412120820 is about 20300.7590991076. The cubic root of 412120820 is about 744.1746155262.

The spelling of 412120820 in words is "four hundred twelve million, one hundred twenty thousand, eight hundred twenty".