1111421305 has 16 divisors (see below), whose sum is σ = 1349291520. Its totient is φ = 878785792.

The previous prime is 1111421299. The next prime is 1111421327. The reversal of 1111421305 is 5031241111.

It is a cyclic number.

It is not a de Polignac number, because 1111421305 - 2⁵ = 1111421273 is a prime.

It is an unprimeable number.

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, 254097 + ... + 258433.

It is an arithmetic number, because the mean of its divisors is an integer number (84330720).

Almost surely, 2^1111421305 is an apocalyptic number.

It is an amenable number.

1111421305 is a deficient number, since it is larger than the sum of its proper divisors (237870215).

1111421305 is a wasteful number, since it uses less digits than its factorization.

1111421305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1111421305 is about 33337.9859169686. The cubic root of 1111421305 is about 1035.8405441368.

Adding to 1111421305 its reverse (5031241111), we get a palindrome (6142662416).

The spelling of 1111421305 in words is "one billion, one hundred eleven million, four hundred twenty-one thousand, three hundred five".