4187421305 has 12 divisors (see below), whose sum is σ = 5303295972. Its totient is φ = 3173623200.

The previous prime is 4187421299. The next prime is 4187421319. The reversal of 4187421305 is 5031247814.

It can be written as a sum of positive squares in 2 ways, for example, as 2686556224 + 1500865081 = 51832^2 + 38741^2 .

It is not a de Polignac number, because 4187421305 - 2⁶ = 4187421241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1158146 + ... + 1161755.

It is an arithmetic number, because the mean of its divisors is an integer number (441941331).

Almost surely, 2^4187421305 is an apocalyptic number.

It is an amenable number.

4187421305 is a deficient number, since it is larger than the sum of its proper divisors (1115874667).

4187421305 is a wasteful number, since it uses less digits than its factorization.

4187421305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319944 (or 2319925 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 4187421305 is about 64710.2874742494. The cubic root of 4187421305 is about 1611.8163348236.

The spelling of 4187421305 in words is "four billion, one hundred eighty-seven million, four hundred twenty-one thousand, three hundred five".