1200120038 has 16 divisors (see below), whose sum is σ = 1950133920. Its totient is φ = 553899528.

The previous prime is 1200120037. The next prime is 1200120107. The reversal of 1200120038 is 8300210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200119998 and 1200120025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132170 + ... + 140957.

It is an arithmetic number, because the mean of its divisors is an integer number (121883370).

Almost surely, 2^1200120038 is an apocalyptic number.

1200120038 is a deficient number, since it is larger than the sum of its proper divisors (750013882).

1200120038 is an equidigital number, since it uses as much as digits as its factorization.

1200120038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273168 (or 273142 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1200120038 is about 34642.7487073413. The cubic root of 1200120038 is about 1062.6940011705.

Adding to 1200120038 its reverse (8300210021), we get a palindrome (9500330059).

The spelling of 1200120038 in words is "one billion, two hundred million, one hundred twenty thousand, thirty-eight".