3881142421 has 8 divisors (see below), whose sum is σ = 4188844184. Its totient is φ = 3574748160.

The previous prime is 3881142389. The next prime is 3881142437. The reversal of 3881142421 is 1242411883.

3881142421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 365956900 + 3515185521 = 19130^2 + 59289^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3881142421 - 2⁵ = 3881142389 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 (3881142481) 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, 320700 + ... + 332581.

It is an arithmetic number, because the mean of its divisors is an integer number (523605523).

Almost surely, 2^3881142421 is an apocalyptic number.

It is an amenable number.

3881142421 is a deficient number, since it is larger than the sum of its proper divisors (307701763).

3881142421 is a wasteful number, since it uses less digits than its factorization.

3881142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653751.

The product of its digits is 12288, while the sum is 34.

The square root of 3881142421 is about 62298.8155665900. The cubic root of 3881142421 is about 1571.5198098946.

The spelling of 3881142421 in words is "three billion, eight hundred eighty-one million, one hundred forty-two thousand, four hundred twenty-one".