40733021 has 4 divisors (see below), whose sum is σ = 46552032. Its totient is φ = 34914012.

The previous prime is 40732999. The next prime is 40733029. The reversal of 40733021 is 12033704.

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 not a de Polignac number, because 40733021 - 2¹⁰ = 40731997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40732984 and 40733002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40733029) 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, 2909495 + ... + 2909508.

It is an arithmetic number, because the mean of its divisors is an integer number (11638008).

Almost surely, 2^40733021 is an apocalyptic number.

It is an amenable number.

40733021 is a deficient number, since it is larger than the sum of its proper divisors (5819011).

40733021 is an equidigital number, since it uses as much as digits as its factorization.

40733021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819010.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 40733021 is about 6382.2426309253. The cubic root of 40733021 is about 344.0716369872.

Adding to 40733021 its reverse (12033704), we get a palindrome (52766725).

The spelling of 40733021 in words is "forty million, seven hundred thirty-three thousand, twenty-one".