423240440044221 has 12 divisors (see below), whose sum is σ = 611348581039872. Its totient is φ = 282159703168776.

The previous prime is 423240440044139. The next prime is 423240440044229. The reversal of 423240440044221 is 122440044042324.

423240440044221 is a `hidden beast` number, since 4 + 2 + 3 + 24 + 0 + 4 + 400 + 4 + 4 + 221 = 666.

It is not a de Polignac number, because 423240440044221 - 2²⁶ = 423240372935357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423240440044229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44618781 + ... + 53266466.

It is an arithmetic number, because the mean of its divisors is an integer number (50945715086656).

Almost surely, 2^{423240440044221} is an apocalyptic number.

It is an amenable number.

423240440044221 is a deficient number, since it is larger than the sum of its proper divisors (188108140995651).

423240440044221 is a wasteful number, since it uses less digits than its factorization.

423240440044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98365680 (or 98365677 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 423240440044221 its reverse (122440044042324), we get a palindrome (545680484086545).

The spelling of 423240440044221 in words is "four hundred twenty-three trillion, two hundred forty billion, four hundred forty million, forty-four thousand, two hundred twenty-one".