420605113 has 2 divisors, whose sum is σ = 420605114. Its totient is φ = 420605112.

The previous prime is 420605099. The next prime is 420605137. The reversal of 420605113 is 311506024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348830329 + 71774784 = 18677^2 + 8472^2 .

It is a cyclic number.

It is not a de Polignac number, because 420605113 - 2⁹ = 420604601 is a prime.

It is a super-2 number, since 2×420605113² = 353817322163485538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420605173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210302556 + 210302557.

It is an arithmetic number, because the mean of its divisors is an integer number (210302557).

Almost surely, 2^420605113 is an apocalyptic number.

It is an amenable number.

420605113 is a deficient number, since it is larger than the sum of its proper divisors (1).

420605113 is an equidigital number, since it uses as much as digits as its factorization.

420605113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 420605113 is about 20508.6594637485. The cubic root of 420605113 is about 749.2467180454.

The spelling of 420605113 in words is "four hundred twenty million, six hundred five thousand, one hundred thirteen".