4031042421 has 8 divisors (see below), whose sum is σ = 6142540864. Its totient is φ = 2303452800.

The previous prime is 4031042419. The next prime is 4031042423. The reversal of 4031042421 is 1242401304.

4031042421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4031042419) and next prime (4031042423).

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

It is not a de Polignac number, because 4031042421 - 2¹ = 4031042419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 191954401 = 4031042421 / (4 + 0 + 3 + 1 + 0 + 4 + 2 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4031042423) 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, 95977180 + ... + 95977221.

It is an arithmetic number, because the mean of its divisors is an integer number (767817608).

Almost surely, 2^4031042421 is an apocalyptic number.

It is an amenable number.

4031042421 is a deficient number, since it is larger than the sum of its proper divisors (2111498443).

4031042421 is a wasteful number, since it uses less digits than its factorization.

4031042421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191954411.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4031042421 is about 63490.4907919288. The cubic root of 4031042421 is about 1591.4968724674.

Adding to 4031042421 its reverse (1242401304), we get a palindrome (5273443725).

The spelling of 4031042421 in words is "four billion, thirty-one million, forty-two thousand, four hundred twenty-one".