40240373 has 2 divisors, whose sum is σ = 40240374. Its totient is φ = 40240372.

The previous prime is 40240357. The next prime is 40240381. The reversal of 40240373 is 37304204.

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., 40233649 + 6724 = 6343^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 40240373 - 2⁴ = 40240357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40246373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20120186 + 20120187.

It is an arithmetic number, because the mean of its divisors is an integer number (20120187).

Almost surely, 2^40240373 is an apocalyptic number.

It is an amenable number.

40240373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40240373 is an equidigital number, since it uses as much as digits as its factorization.

40240373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 40240373 is about 6343.5300109639. The cubic root of 40240373 is about 342.6788750758.

Adding to 40240373 its reverse (37304204), we get a palindrome (77544577).

The spelling of 40240373 in words is "forty million, two hundred forty thousand, three hundred seventy-three".