40220004281 has 2 divisors, whose sum is σ = 40220004282. Its totient is φ = 40220004280.

The previous prime is 40220004263. The next prime is 40220004347. The reversal of 40220004281 is 18240002204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40030005625 + 189998656 = 200075^2 + 13784^2 .

It is a cyclic number.

It is not a de Polignac number, because 40220004281 - 2¹⁸ = 40219742137 is a prime.

It is a super-2 number, since 2×40220004281² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40220004581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110002140 + 20110002141.

It is an arithmetic number, because the mean of its divisors is an integer number (20110002141).

Almost surely, 2^40220004281 is an apocalyptic number.

It is an amenable number.

40220004281 is a deficient number, since it is larger than the sum of its proper divisors (1).

40220004281 is an equidigital number, since it uses as much as digits as its factorization.

40220004281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 40220004281 its reverse (18240002204), we get a palindrome (58460006485).

The spelling of 40220004281 in words is "forty billion, two hundred twenty million, four thousand, two hundred eighty-one".