43123300042 has 8 divisors (see below), whose sum is σ = 64693394532. Its totient is φ = 21558835200.

The previous prime is 43123300013. The next prime is 43123300043. The reversal of 43123300042 is 24000332134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40945117801 + 2178182241 = 202349^2 + 46671^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 43123299986 and 43123300022.

It is not an unprimeable number, because it can be changed into a prime (43123300043) 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, 1388209 + ... + 1418932.

Almost surely, 2^43123300042 is an apocalyptic number.

43123300042 is a deficient number, since it is larger than the sum of its proper divisors (21570094490).

43123300042 is a wasteful number, since it uses less digits than its factorization.

43123300042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814824.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 43123300042 its reverse (24000332134), we get a palindrome (67123632176).

The spelling of 43123300042 in words is "forty-three billion, one hundred twenty-three million, three hundred thousand, forty-two".