40002073 has 2 divisors, whose sum is σ = 40002074. Its totient is φ = 40002072.

The previous prime is 40002043. The next prime is 40002077. The reversal of 40002073 is 37020004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33489369 + 6512704 = 5787^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 40002073 - 2⁵ = 40002041 is a prime.

It is not a weakly prime, because it can be changed into another prime (40002077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20001036 + 20001037.

It is an arithmetic number, because the mean of its divisors is an integer number (20001037).

Almost surely, 2^40002073 is an apocalyptic number.

It is an amenable number.

40002073 is a deficient number, since it is larger than the sum of its proper divisors (1).

40002073 is an equidigital number, since it uses as much as digits as its factorization.

40002073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 40002073 is about 6324.7192032532. The cubic root of 40002073 is about 342.0010972002.

Adding to 40002073 its reverse (37020004), we get a palindrome (77022077).

The spelling of 40002073 in words is "forty million, two thousand, seventy-three".