1200420404 has 12 divisors (see below), whose sum is σ = 2114648928. Its totient is φ = 596235000.

The previous prime is 1200420391. The next prime is 1200420407. The reversal of 1200420404 is 4040240021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200420407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993122 + ... + 994329.

It is an arithmetic number, because the mean of its divisors is an integer number (176220744).

Almost surely, 2^1200420404 is an apocalyptic number.

It is an amenable number.

1200420404 is a deficient number, since it is larger than the sum of its proper divisors (914228524).

1200420404 is a wasteful number, since it uses less digits than its factorization.

1200420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987606 (or 1987604 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1200420404 is about 34647.0836290733. The cubic root of 1200420404 is about 1062.7826507806.

Adding to 1200420404 its reverse (4040240021), we get a palindrome (5240660425).

The spelling of 1200420404 in words is "one billion, two hundred million, four hundred twenty thousand, four hundred four".