40335421 has 4 divisors (see below), whose sum is σ = 46097632. Its totient is φ = 34573212.

The previous prime is 40335401. The next prime is 40335467. The reversal of 40335421 is 12453304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40335421 - 2⁵ = 40335389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40335392 and 40335401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40335401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881095 + ... + 2881108.

It is an arithmetic number, because the mean of its divisors is an integer number (11524408).

Almost surely, 2^40335421 is an apocalyptic number.

It is an amenable number.

40335421 is a deficient number, since it is larger than the sum of its proper divisors (5762211).

40335421 is an equidigital number, since it uses as much as digits as its factorization.

40335421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762210.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40335421 is about 6351.0173200835. The cubic root of 40335421 is about 342.9484661079.

Adding to 40335421 its reverse (12453304), we get a palindrome (52788725).

The spelling of 40335421 in words is "forty million, three hundred thirty-five thousand, four hundred twenty-one".