4004112421 has 4 divisors (see below), whose sum is σ = 4214855200. Its totient is φ = 3793369644.

The previous prime is 4004112401. The next prime is 4004112461. The reversal of 4004112421 is 1242114004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4004112421 - 2¹⁹ = 4003588133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 210742759 = 4004112421 / (4 + 0 + 0 + 4 + 1 + 1 + 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 (4004112401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105371361 + ... + 105371398.

It is an arithmetic number, because the mean of its divisors is an integer number (1053713800).

Almost surely, 2^4004112421 is an apocalyptic number.

It is an amenable number.

4004112421 is a deficient number, since it is larger than the sum of its proper divisors (210742779).

4004112421 is a wasteful number, since it uses less digits than its factorization.

4004112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210742778.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4004112421 is about 63278.0563939823. The cubic root of 4004112421 is about 1587.9448707616.

Adding to 4004112421 its reverse (1242114004), we get a palindrome (5246226425).

The spelling of 4004112421 in words is "four billion, four million, one hundred twelve thousand, four hundred twenty-one".