1305420111 has 16 divisors (see below), whose sum is σ = 1936257120. Its totient is φ = 869244480.

The previous prime is 1305420107. The next prime is 1305420133. The reversal of 1305420111 is 1110245031.

1305420111 is a `hidden beast` number, since 13 + 0 + 542 + 0 + 111 = 666.

It is not a de Polignac number, because 1305420111 - 2² = 1305420107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305420211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5310 + ... + 51371.

It is an arithmetic number, because the mean of its divisors is an integer number (121016070).

Almost surely, 2^1305420111 is an apocalyptic number.

1305420111 is a deficient number, since it is larger than the sum of its proper divisors (630837009).

1305420111 is an equidigital number, since it uses as much as digits as its factorization.

1305420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57543 (or 57537 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1305420111 is about 36130.5979884087. The cubic root of 1305420111 is about 1092.9075672675.

Adding to 1305420111 its reverse (1110245031), we get a palindrome (2415665142).

The spelling of 1305420111 in words is "one billion, three hundred five million, four hundred twenty thousand, one hundred eleven".