40012573 has 2 divisors, whose sum is σ = 40012574. Its totient is φ = 40012572.

The previous prime is 40012519. The next prime is 40012589. The reversal of 40012573 is 37521004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31561924 + 8450649 = 5618^2 + 2907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40012573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40072573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20006286 + 20006287.

It is an arithmetic number, because the mean of its divisors is an integer number (20006287).

Almost surely, 2^40012573 is an apocalyptic number.

It is an amenable number.

40012573 is a deficient number, since it is larger than the sum of its proper divisors (1).

40012573 is an equidigital number, since it uses as much as digits as its factorization.

40012573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40012573 is about 6325.5492251661. The cubic root of 40012573 is about 342.0310181276.

Adding to 40012573 its reverse (37521004), we get a palindrome (77533577).

The spelling of 40012573 in words is "forty million, twelve thousand, five hundred seventy-three".