1002112 has 16 divisors (see below), whose sum is σ = 1996650. Its totient is φ = 500992.

The previous prime is 1002109. The next prime is 1002121. The reversal of 1002112 is 2112001.

It can be written as a sum of positive squares in only one way, i.e., 968256 + 33856 = 984^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 1002095 and 1002104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3787 + ... + 4042.

2^1002112 is an apocalyptic number.

It is an amenable number.

1002112 is a deficient number, since it is larger than the sum of its proper divisors (994538).

1002112 is an frugal number, since it uses more digits than its factorization.

1002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843 (or 7831 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1002112 is about 1001.0554430200. The cubic root of 1002112 is about 100.0703504965.

Adding to 1002112 its reverse (2112001), we get a palindrome (3114113).

The spelling of 1002112 in words is "one million, two thousand, one hundred twelve".