1200120404 has 24 divisors (see below), whose sum is σ = 2504600448. Its totient is φ = 491974560.

The previous prime is 1200120401. The next prime is 1200120407. The reversal of 1200120404 is 4040210021.

It is an interprime number because it is at equal distance from previous prime (1200120401) and next prime (1200120407).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931127 + ... + 932414.

It is an arithmetic number, because the mean of its divisors is an integer number (104358352).

Almost surely, 2^1200120404 is an apocalyptic number.

1200120404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1200120404 is an abundant number, since it is smaller than the sum of its proper divisors (1304480044).

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

1200120404 is a wasteful number, since it uses less digits than its factorization.

1200120404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863575 (or 1863573 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1200120404 is about 34642.7539898317. The cubic root of 1200120404 is about 1062.6941092002.

Adding to 1200120404 its reverse (4040210021), we get a palindrome (5240330425).

The spelling of 1200120404 in words is "one billion, two hundred million, one hundred twenty thousand, four hundred four".