40435021 has 8 divisors (see below), whose sum is σ = 46432800. Its totient is φ = 34824240.

The previous prime is 40434991. The next prime is 40435033. The reversal of 40435021 is 12053404.

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

It is not a de Polignac number, because 40435021 - 2⁷ = 40434893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40435021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40435051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96526 + ... + 96943.

It is an arithmetic number, because the mean of its divisors is an integer number (5804100).

Almost surely, 2^40435021 is an apocalyptic number.

It is an amenable number.

40435021 is a deficient number, since it is larger than the sum of its proper divisors (5997779).

40435021 is a wasteful number, since it uses less digits than its factorization.

40435021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193499.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40435021 is about 6358.8537489079. The cubic root of 40435021 is about 343.2305142414.

Adding to 40435021 its reverse (12053404), we get a palindrome (52488425).

The spelling of 40435021 in words is "forty million, four hundred thirty-five thousand, twenty-one".