3875421 has 8 divisors (see below), whose sum is σ = 5637024. Its totient is φ = 2348720.

The previous prime is 3875407. The next prime is 3875429. The reversal of 3875421 is 1245783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3875421 - 2¹³ = 3867229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3875429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58686 + ... + 58751.

It is an arithmetic number, because the mean of its divisors is an integer number (704628).

Almost surely, 2^3875421 is an apocalyptic number.

It is an amenable number.

3875421 is a deficient number, since it is larger than the sum of its proper divisors (1761603).

3875421 is a wasteful number, since it uses less digits than its factorization.

3875421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117451.

The product of its digits is 6720, while the sum is 30.

The square root of 3875421 is about 1968.6088997056. The cubic root of 3875421 is about 157.0747206770.

The spelling of 3875421 in words is "three million, eight hundred seventy-five thousand, four hundred twenty-one".