403204120 has 128 divisors (see below), whose sum is σ = 1027572480. Its totient is φ = 141120000.

The previous prime is 403204097. The next prime is 403204121. The reversal of 403204120 is 21402304.

It is a junction number, because it is equal to n+sod(n) for n = 403204094 and 403204103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403204121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1910815 + ... + 1911025.

It is an arithmetic number, because the mean of its divisors is an integer number (8027910).

Almost surely, 2^403204120 is an apocalyptic number.

403204120 is a gapful number since it is divisible by the number (40) 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 403204120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513786240).

403204120 is an abundant number, since it is smaller than the sum of its proper divisors (624368360).

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

403204120 is a wasteful number, since it uses less digits than its factorization.

403204120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 403204120 is about 20079.9432270114. The cubic root of 403204120 is about 738.7684164698.

Adding to 403204120 its reverse (21402304), we get a palindrome (424606424).

The spelling of 403204120 in words is "four hundred three million, two hundred four thousand, one hundred twenty".