43421230123 has 16 divisors (see below), whose sum is σ = 44300805120. Its totient is φ = 42551361216.

The previous prime is 43421230117. The next prime is 43421230141. The reversal of 43421230123 is 32103212434.

It is a cyclic number.

It is not a de Polignac number, because 43421230123 - 2¹³ = 43421221931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421240123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14623383 + ... + 14626351.

It is an arithmetic number, because the mean of its divisors is an integer number (2768800320).

Almost surely, 2^43421230123 is an apocalyptic number.

43421230123 is a deficient number, since it is larger than the sum of its proper divisors (879574997).

43421230123 is a wasteful number, since it uses less digits than its factorization.

43421230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 43421230123 its reverse (32103212434), we get a palindrome (75524442557).

The spelling of 43421230123 in words is "forty-three billion, four hundred twenty-one million, two hundred thirty thousand, one hundred twenty-three".