40143373 has 2 divisors, whose sum is σ = 40143374. Its totient is φ = 40143372.

The previous prime is 40143347. The next prime is 40143377. The reversal of 40143373 is 37334104.

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., 31393609 + 8749764 = 5603^2 + 2958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40143373 is a prime.

It is a super-2 number, since 2×40143373² = 3222980791634258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40143377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071686 + 20071687.

It is an arithmetic number, because the mean of its divisors is an integer number (20071687).

Almost surely, 2^40143373 is an apocalyptic number.

It is an amenable number.

40143373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40143373 is an equidigital number, since it uses as much as digits as its factorization.

40143373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 40143373 is about 6335.8798126227. The cubic root of 40143373 is about 342.4033094137.

Adding to 40143373 its reverse (37334104), we get a palindrome (77477477).

The spelling of 40143373 in words is "forty million, one hundred forty-three thousand, three hundred seventy-three".