40242646273 has 2 divisors, whose sum is σ = 40242646274. Its totient is φ = 40242646272.

The previous prime is 40242646207. The next prime is 40242646307. The reversal of 40242646273 is 37264624204.

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., 23966755344 + 16275890929 = 154812^2 + 127577^2 .

It is a cyclic number.

It is not a de Polignac number, because 40242646273 - 2¹³ = 40242638081 is a prime.

It is not a weakly prime, because it can be changed into another prime (40242646573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121323136 + 20121323137.

It is an arithmetic number, because the mean of its divisors is an integer number (20121323137).

Almost surely, 2^40242646273 is an apocalyptic number.

It is an amenable number.

40242646273 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242646273 is an equidigital number, since it uses as much as digits as its factorization.

40242646273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 40.

The spelling of 40242646273 in words is "forty billion, two hundred forty-two million, six hundred forty-six thousand, two hundred seventy-three".