43423421001 has 16 divisors (see below), whose sum is σ = 60179133504. Its totient is φ = 27827181504.

The previous prime is 43423420993. The next prime is 43423421017. The reversal of 43423421001 is 10012432434.

It is not a de Polignac number, because 43423421001 - 2³ = 43423420993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43423421051) 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, 2347426 + ... + 2365851.

It is an arithmetic number, because the mean of its divisors is an integer number (3761195844).

Almost surely, 2^43423421001 is an apocalyptic number.

It is an amenable number.

43423421001 is a deficient number, since it is larger than the sum of its proper divisors (16755712503).

43423421001 is a wasteful number, since it uses less digits than its factorization.

43423421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713400.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 43423421001 its reverse (10012432434), we get a palindrome (53435853435).

The spelling of 43423421001 in words is "forty-three billion, four hundred twenty-three million, four hundred twenty-one thousand, one".