403204120420 has 24 divisors (see below), whose sum is σ = 869613212664. Its totient is φ = 156922684416.

The previous prime is 403204120409. The next prime is 403204120471. The reversal of 403204120420 is 24021402304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 213331286884 + 189872833536 = 461878^2 + 435744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 403204120391 and 403204120400.

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, 272434477 + ... + 272435956.

It is an arithmetic number, because the mean of its divisors is an integer number (36233883861).

Almost surely, 2^403204120420 is an apocalyptic number.

It is an amenable number.

403204120420 is an abundant number, since it is smaller than the sum of its proper divisors (466409092244).

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

403204120420 is a wasteful number, since it uses less digits than its factorization.

403204120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544870479 (or 544870477 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 403204120420 its reverse (24021402304), we get a palindrome (427225522724).

The spelling of 403204120420 in words is "four hundred three billion, two hundred four million, one hundred twenty thousand, four hundred twenty".