1000000120 has 32 divisors (see below), whose sum is σ = 2571429600. Its totient is φ = 342857088.

The previous prime is 1000000103. The next prime is 1000000123. The reversal of 1000000120 is 210000001.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785435 + ... + 1785994.

It is an arithmetic number, because the mean of its divisors is an integer number (80357175).

Almost surely, 2^1000000120 is an apocalyptic number.

1000000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000000120 is an abundant number, since it is smaller than the sum of its proper divisors (1571429480).

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

1000000120 is a wasteful number, since it uses less digits than its factorization.

1000000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571447 (or 3571443 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1000000120 is about 31622.7784990503. The cubic root of 1000000120 is about 1000.0000400000. Note that the first 4 decimals are identical.

Adding to 1000000120 its reverse (210000001), we get a palindrome (1210000121).

The spelling of 1000000120 in words is "one billion, one hundred twenty", and thus it is an aban number.