3727143421 has 4 divisors (see below), whose sum is σ = 3727326492. Its totient is φ = 3726960352.

The previous prime is 3727143401. The next prime is 3727143437. The reversal of 3727143421 is 1243417273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 300328900 + 3426814521 = 17330^2 + 58539^2 .

It is a cyclic number.

It is not a de Polignac number, because 3727143421 - 2¹⁹ = 3726619133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3727143401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56536 + ... + 103201.

It is an arithmetic number, because the mean of its divisors is an integer number (931831623).

Almost surely, 2^3727143421 is an apocalyptic number.

It is an amenable number.

3727143421 is a deficient number, since it is larger than the sum of its proper divisors (183071).

3727143421 is a wasteful number, since it uses less digits than its factorization.

3727143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183070.

The product of its digits is 28224, while the sum is 34.

The square root of 3727143421 is about 61050.3351424052. The cubic root of 3727143421 is about 1550.4533423853.

The spelling of 3727143421 in words is "three billion, seven hundred twenty-seven million, one hundred forty-three thousand, four hundred twenty-one".