3125421671 has 4 divisors (see below), whose sum is σ = 3126342432. Its totient is φ = 3124500912.

The previous prime is 3125421647. The next prime is 3125421683. The reversal of 3125421671 is 1761245213.

3125421671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3125421671 - 2¹⁰ = 3125420647 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 (3125421641) 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, 455270 + ... + 462083.

It is an arithmetic number, because the mean of its divisors is an integer number (781585608).

Almost surely, 2^3125421671 is an apocalyptic number.

3125421671 is a deficient number, since it is larger than the sum of its proper divisors (920761).

3125421671 is an equidigital number, since it uses as much as digits as its factorization.

3125421671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920760.

The product of its digits is 10080, while the sum is 32.

The square root of 3125421671 is about 55905.4708503560. The cubic root of 3125421671 is about 1462.0746247347.

Adding to 3125421671 its reverse (1761245213), we get a palindrome (4886666884).

It can be divided in two parts, 31254 and 21671, that added together give a palindrome (52925).

The spelling of 3125421671 in words is "three billion, one hundred twenty-five million, four hundred twenty-one thousand, six hundred seventy-one".