4040245 has 8 divisors (see below), whose sum is σ = 5289120. Its totient is φ = 2938320.

The previous prime is 4040233. The next prime is 4040279. The reversal of 4040245 is 5420404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4040245 - 2⁹ = 4039733 is a prime.

4040245 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36675 + ... + 36784.

It is an arithmetic number, because the mean of its divisors is an integer number (661140).

Almost surely, 2^4040245 is an apocalyptic number.

It is an amenable number.

4040245 is a deficient number, since it is larger than the sum of its proper divisors (1248875).

4040245 is a wasteful number, since it uses less digits than its factorization.

4040245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73475.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4040245 is about 2010.0360693281. The cubic root of 4040245 is about 159.2707042867.

Adding to 4040245 its reverse (5420404), we get a palindrome (9460649).

The spelling of 4040245 in words is "four million, forty thousand, two hundred forty-five".