2040045 has 16 divisors (see below), whose sum is σ = 3730560. Its totient is φ = 932544.

The previous prime is 2040041. The next prime is 2040047. The reversal of 2040045 is 5400402.

It is not a de Polignac number, because 2040045 - 2² = 2040041 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 not an unprimeable number, because it can be changed into a prime (2040041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610 + ... + 9819.

It is an arithmetic number, because the mean of its divisors is an integer number (233160).

2^2040045 is an apocalyptic number.

It is an amenable number.

2040045 is a deficient number, since it is larger than the sum of its proper divisors (1690515).

2040045 is a wasteful number, since it uses less digits than its factorization.

2040045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19444.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 2040045 is about 1428.3014387726. The cubic root of 2040045 is about 126.8274466487.

Adding to 2040045 its reverse (5400402), we get a palindrome (7440447).

The spelling of 2040045 in words is "two million, forty thousand, forty-five".