423759421 has 4 divisors (see below), whose sum is σ = 424771200. Its totient is φ = 422747644.

The previous prime is 423759419. The next prime is 423759437. The reversal of 423759421 is 124957324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423759421 - 2¹ = 423759419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423759481) 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 3 ways as a sum of consecutive naturals, for example, 505261 + ... + 506098.

It is an arithmetic number, because the mean of its divisors is an integer number (106192800).

Almost surely, 2^423759421 is an apocalyptic number.

It is an amenable number.

423759421 is a deficient number, since it is larger than the sum of its proper divisors (1011779).

423759421 is a wasteful number, since it uses less digits than its factorization.

423759421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011778.

The product of its digits is 60480, while the sum is 37.

The square root of 423759421 is about 20585.4176785413. The cubic root of 423759421 is about 751.1150353659.

The spelling of 423759421 in words is "four hundred twenty-three million, seven hundred fifty-nine thousand, four hundred twenty-one".