427540117 has 2 divisors, whose sum is σ = 427540118. Its totient is φ = 427540116.

The previous prime is 427540103. The next prime is 427540121. The reversal of 427540117 is 711045724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235745316 + 191794801 = 15354^2 + 13849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427540117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427540177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213770058 + 213770059.

It is an arithmetic number, because the mean of its divisors is an integer number (213770059).

Almost surely, 2^427540117 is an apocalyptic number.

It is an amenable number.

427540117 is a deficient number, since it is larger than the sum of its proper divisors (1).

427540117 is an equidigital number, since it uses as much as digits as its factorization.

427540117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 427540117 is about 20677.0432364011. The cubic root of 427540117 is about 753.3421905964.

The spelling of 427540117 in words is "four hundred twenty-seven million, five hundred forty thousand, one hundred seventeen".