40642337 has 2 divisors, whose sum is σ = 40642338. Its totient is φ = 40642336.

The previous prime is 40642319. The next prime is 40642339. The reversal of 40642337 is 73324604.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33651601 + 6990736 = 5801^2 + 2644^2 .

It is a cyclic number.

It is not a de Polignac number, because 40642337 - 2¹⁴ = 40625953 is a prime.

Together with 40642339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40642339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20321168 + 20321169.

It is an arithmetic number, because the mean of its divisors is an integer number (20321169).

Almost surely, 2^40642337 is an apocalyptic number.

It is an amenable number.

40642337 is a deficient number, since it is larger than the sum of its proper divisors (1).

40642337 is an equidigital number, since it uses as much as digits as its factorization.

40642337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 40642337 is about 6375.1342730957. The cubic root of 40642337 is about 343.8161114937.

The spelling of 40642337 in words is "forty million, six hundred forty-two thousand, three hundred thirty-seven".