43155001423 has 4 divisors (see below), whose sum is σ = 43265940120. Its totient is φ = 43044062728.

The previous prime is 43155001411. The next prime is 43155001441. The reversal of 43155001423 is 32410055134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43155001423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43155001391 and 43155001400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43155001493) 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, 55468765 + ... + 55469542.

It is an arithmetic number, because the mean of its divisors is an integer number (10816485030).

Almost surely, 2^43155001423 is an apocalyptic number.

43155001423 is a deficient number, since it is larger than the sum of its proper divisors (110938697).

43155001423 is a wasteful number, since it uses less digits than its factorization.

43155001423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110938696.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 43155001423 its reverse (32410055134), we get a palindrome (75565056557).

The spelling of 43155001423 in words is "forty-three billion, one hundred fifty-five million, one thousand, four hundred twenty-three".