43204342123 has 2 divisors, whose sum is σ = 43204342124. Its totient is φ = 43204342122.

The previous prime is 43204342091. The next prime is 43204342127. The reversal of 43204342123 is 32124340234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43204342123 - 2⁵ = 43204342091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43204342091 and 43204342100.

It is not a weakly prime, because it can be changed into another prime (43204342127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21602171061 + 21602171062.

It is an arithmetic number, because the mean of its divisors is an integer number (21602171062).

Almost surely, 2^43204342123 is an apocalyptic number.

43204342123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43204342123 is an equidigital number, since it uses as much as digits as its factorization.

43204342123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43204342123 its reverse (32124340234), we get a palindrome (75328682357).

The spelling of 43204342123 in words is "forty-three billion, two hundred four million, three hundred forty-two thousand, one hundred twenty-three".