4401423121 has 4 divisors (see below), whose sum is σ = 4543404544. Its totient is φ = 4259441700.

The previous prime is 4401423101. The next prime is 4401423127. The reversal of 4401423121 is 1213241044.

It is a happy number.

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 4401423121 - 2¹³ = 4401414929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4401423092 and 4401423101.

It is not an unprimeable number, because it can be changed into a prime (4401423127) 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, 70990665 + ... + 70990726.

It is an arithmetic number, because the mean of its divisors is an integer number (1135851136).

Almost surely, 2^4401423121 is an apocalyptic number.

It is an amenable number.

4401423121 is a deficient number, since it is larger than the sum of its proper divisors (141981423).

4401423121 is a wasteful number, since it uses less digits than its factorization.

4401423121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141981422.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4401423121 is about 66343.2221180129. Note that the first 3 decimals coincide. The cubic root of 4401423121 is about 1638.8191878104.

Adding to 4401423121 its reverse (1213241044), we get a palindrome (5614664165).

The spelling of 4401423121 in words is "four billion, four hundred one million, four hundred twenty-three thousand, one hundred twenty-one".