40332021 has 4 divisors (see below), whose sum is σ = 53776032. Its totient is φ = 26888012.

The previous prime is 40332013. The next prime is 40332029. The reversal of 40332021 is 12023304.

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 an interprime number because it is at equal distance from previous prime (40332013) and next prime (40332029).

It is a cyclic number.

It is not a de Polignac number, because 40332021 - 2³ = 40332013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40332029) 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, 6722001 + ... + 6722006.

It is an arithmetic number, because the mean of its divisors is an integer number (13444008).

Almost surely, 2^40332021 is an apocalyptic number.

It is an amenable number.

40332021 is a deficient number, since it is larger than the sum of its proper divisors (13444011).

40332021 is a wasteful number, since it uses less digits than its factorization.

40332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13444010.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40332021 is about 6350.7496407904. The cubic root of 40332021 is about 342.9388297674.

Adding to 40332021 its reverse (12023304), we get a palindrome (52355325).

The spelling of 40332021 in words is "forty million, three hundred thirty-two thousand, twenty-one".