2140045 has 12 divisors (see below), whose sum is σ = 2729844. Its totient is φ = 1610240.

The previous prime is 2140013. The next prime is 2140049. The reversal of 2140045 is 5400412.

It can be written as a sum of positive squares in 6 ways, for example, as 75076 + 2064969 = 274^2 + 1437^2 .

It is not a de Polignac number, because 2140045 - 2⁵ = 2140013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 705 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (227487).

2^2140045 is an apocalyptic number.

It is an amenable number.

2140045 is a deficient number, since it is larger than the sum of its proper divisors (589799).

2140045 is a wasteful number, since it uses less digits than its factorization.

2140045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2140045 is about 1462.8892644353. The cubic root of 2140045 is about 128.8667775134.

Adding to 2140045 its reverse (5400412), we get a palindrome (7540457).

The spelling of 2140045 in words is "two million, one hundred forty thousand, forty-five".