4123442121 has 8 divisors (see below), whose sum is σ = 5498230944. Its totient is φ = 2748807360.

The previous prime is 4123442101. The next prime is 4123442143. The reversal of 4123442121 is 1212443214.

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

It is not a de Polignac number, because 4123442121 - 2¹¹ = 4123440073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4123442091 and 4123442100.

It is not an unprimeable number, because it can be changed into a prime (4123442101) 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, 59770 + ... + 108716.

It is an arithmetic number, because the mean of its divisors is an integer number (687278868).

Almost surely, 2^4123442121 is an apocalyptic number.

It is an amenable number.

4123442121 is a deficient number, since it is larger than the sum of its proper divisors (1374788823).

4123442121 is a wasteful number, since it uses less digits than its factorization.

4123442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77031.

The product of its digits is 1536, while the sum is 24.

The square root of 4123442121 is about 64214.0336764480. The cubic root of 4123442121 is about 1603.5652425911.

Adding to 4123442121 its reverse (1212443214), we get a palindrome (5335885335).

The spelling of 4123442121 in words is "four billion, one hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-one".