940427281 has 2 divisors, whose sum is σ = 940427282. Its totient is φ = 940427280.

The previous prime is 940427237. The next prime is 940427353. The reversal of 940427281 is 182724049.

It is the 12520-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733326400 + 207100881 = 27080^2 + 14391^2 .

It is a cyclic number.

It is not a de Polignac number, because 940427281 - 2¹⁷ = 940296209 is a prime.

It is a super-2 number, since 2×940427281² = 1768806941698105922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 940427281.

It is not a weakly prime, because it can be changed into another prime (940427221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470213640 + 470213641.

It is an arithmetic number, because the mean of its divisors is an integer number (470213641).

Almost surely, 2^940427281 is an apocalyptic number.

It is an amenable number.

940427281 is a deficient number, since it is larger than the sum of its proper divisors (1).

940427281 is an equidigital number, since it uses as much as digits as its factorization.

940427281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 940427281 is about 30666.3868266217. The cubic root of 940427281 is about 979.7345112436.

The spelling of 940427281 in words is "nine hundred forty million, four hundred twenty-seven thousand, two hundred eighty-one".