4123121343 has 12 divisors (see below), whose sum is σ = 6042701784. Its totient is φ = 2498861200.

The previous prime is 4123121341. The next prime is 4123121347. The reversal of 4123121343 is 3431213214.

It is a happy number.

It is not a de Polignac number, because 4123121343 - 2¹ = 4123121341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123121341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5678868 + ... + 5679593.

It is an arithmetic number, because the mean of its divisors is an integer number (503558482).

Almost surely, 2^4123121343 is an apocalyptic number.

4123121343 is a deficient number, since it is larger than the sum of its proper divisors (1919580441).

4123121343 is a wasteful number, since it uses less digits than its factorization.

4123121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358486 (or 11358475 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 4123121343 is about 64211.5359028267. The cubic root of 4123121343 is about 1603.5236590649.

Adding to 4123121343 its reverse (3431213214), we get a palindrome (7554334557).

The spelling of 4123121343 in words is "four billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred forty-three".