423001440019 has 4 divisors (see below), whose sum is σ = 423003236544. Its totient is φ = 422999643496.

The previous prime is 423001439983. The next prime is 423001440049. The reversal of 423001440019 is 910044100324.

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

It is a cyclic number.

It is not a de Polignac number, because 423001440019 - 2³³ = 414411505427 is a prime.

It is a super-2 number, since 2×423001440019² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423001440049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480232 + ... + 1037605.

It is an arithmetic number, because the mean of its divisors is an integer number (105750809136).

Almost surely, 2^423001440019 is an apocalyptic number.

423001440019 is a deficient number, since it is larger than the sum of its proper divisors (1796525).

423001440019 is a wasteful number, since it uses less digits than its factorization.

423001440019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796524.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 423001440019 in words is "four hundred twenty-three billion, one million, four hundred forty thousand, nineteen".