1000001120 has 48 divisors (see below), whose sum is σ = 2417461200. Its totient is φ = 390695424.

The previous prime is 1000001099. The next prime is 1000001137. The reversal of 1000001120 is 211000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

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, 65795 + ... + 79554.

It is an arithmetic number, because the mean of its divisors is an integer number (50363775).

Almost surely, 2^1000001120 is an apocalyptic number.

1000001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000001120 is an abundant number, since it is smaller than the sum of its proper divisors (1417460080).

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

1000001120 is a wasteful number, since it uses less digits than its factorization.

1000001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145407 (or 145399 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1000001120 is about 31622.7943104337. The cubic root of 1000001120 is about 1000.0003733332. Note that the first 3 decimals are identical.

Adding to 1000001120 its reverse (211000001), we get a palindrome (1211001121).

The spelling of 1000001120 in words is "one billion, one thousand, one hundred twenty".