2112045 has 16 divisors (see below), whose sum is σ = 3639552. Its totient is φ = 1039680.

The previous prime is 2112017. The next prime is 2112053. The reversal of 2112045 is 5402112.

2112045 = T₃₉₀ + T₃₉₁ + ... + T₄₁₅.

It is not a de Polignac number, because 2112045 - 2⁵ = 2112013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5221 + ... + 5610.

It is an arithmetic number, because the mean of its divisors is an integer number (227472).

2^2112045 is an apocalyptic number.

It is an amenable number.

2112045 is a deficient number, since it is larger than the sum of its proper divisors (1527507).

2112045 is a wasteful number, since it uses less digits than its factorization.

2112045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2112045 is about 1453.2876521873. The cubic root of 2112045 is about 128.3022844247.

Adding to 2112045 its reverse (5402112), we get a palindrome (7514157).

The spelling of 2112045 in words is "two million, one hundred twelve thousand, forty-five".