43420421123 has 8 divisors (see below), whose sum is σ = 45977768928. Its totient is φ = 40863429504.

The previous prime is 43420421063. The next prime is 43420421141. The reversal of 43420421123 is 32112402434.

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

It is a cyclic number.

It is not a de Polignac number, because 43420421123 - 2³² = 39125453827 is a prime.

It is a super-2 number, since 2×43420421123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43420421092 and 43420421101.

It is not an unprimeable number, because it can be changed into a prime (43420421173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186290 + ... + 348632.

It is an arithmetic number, because the mean of its divisors is an integer number (5747221116).

Almost surely, 2^43420421123 is an apocalyptic number.

43420421123 is a deficient number, since it is larger than the sum of its proper divisors (2557347805).

43420421123 is a wasteful number, since it uses less digits than its factorization.

43420421123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178093.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43420421123 its reverse (32112402434), we get a palindrome (75532823557).

The spelling of 43420421123 in words is "forty-three billion, four hundred twenty million, four hundred twenty-one thousand, one hundred twenty-three".