427721113 has 2 divisors, whose sum is σ = 427721114. Its totient is φ = 427721112.

The previous prime is 427721093. The next prime is 427721117. The reversal of 427721113 is 311127724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391564944 + 36156169 = 19788^2 + 6013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427721113 is a prime.

It is not a weakly prime, because it can be changed into another prime (427721117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213860556 + 213860557.

It is an arithmetic number, because the mean of its divisors is an integer number (213860557).

Almost surely, 2^427721113 is an apocalyptic number.

It is an amenable number.

427721113 is a deficient number, since it is larger than the sum of its proper divisors (1).

427721113 is an equidigital number, since it uses as much as digits as its factorization.

427721113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 28.

The square root of 427721113 is about 20681.4195112425. The cubic root of 427721113 is about 753.4484829115.

Adding to 427721113 its reverse (311127724), we get a palindrome (738848837).

The spelling of 427721113 in words is "four hundred twenty-seven million, seven hundred twenty-one thousand, one hundred thirteen".