2045121 has 16 divisors (see below), whose sum is σ = 3010560. Its totient is φ = 1226880.

The previous prime is 2045093. The next prime is 2045129. The reversal of 2045121 is 1215402.

It is not a de Polignac number, because 2045121 - 2⁵ = 2045089 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045121.

It is not an unprimeable number, because it can be changed into a prime (2045129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960 + ... + 2238.

It is an arithmetic number, because the mean of its divisors is an integer number (188160).

2^2045121 is an apocalyptic number.

It is an amenable number.

2045121 is a deficient number, since it is larger than the sum of its proper divisors (965439).

2045121 is a wasteful number, since it uses less digits than its factorization.

2045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

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

The square root of 2045121 is about 1430.0772706396. The cubic root of 2045121 is about 126.9325493813.

The spelling of 2045121 in words is "two million, forty-five thousand, one hundred twenty-one".