40321007 has 2 divisors, whose sum is σ = 40321008. Its totient is φ = 40321006.

The previous prime is 40320997. The next prime is 40321019. The reversal of 40321007 is 70012304.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40321007 - 2⁸ = 40320751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40321037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160503 + 20160504.

It is an arithmetic number, because the mean of its divisors is an integer number (20160504).

Almost surely, 2^40321007 is an apocalyptic number.

40321007 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321007 is an equidigital number, since it uses as much as digits as its factorization.

40321007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 40321007 is about 6349.8824398567. The cubic root of 40321007 is about 342.9076099735.

The spelling of 40321007 in words is "forty million, three hundred twenty-one thousand, seven".