423430022421 has 60 divisors (see below), whose sum is σ = 736021658988. Its totient is φ = 241887679488.

The previous prime is 423430022417. The next prime is 423430022423. The reversal of 423430022421 is 124220034324.

423430022421 is a `hidden beast` number, since 4 + 2 + 3 + 430 + 0 + 224 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2604060900 + 420825961521 = 51030^2 + 648711^2 .

It is not a de Polignac number, because 423430022421 - 2² = 423430022417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423430022423) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 15056245 + ... + 15084341.

Almost surely, 2^423430022421 is an apocalyptic number.

It is an amenable number.

423430022421 is a deficient number, since it is larger than the sum of its proper divisors (312591636567).

423430022421 is a wasteful number, since it uses less digits than its factorization.

423430022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31920 (or 31904 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 423430022421 its reverse (124220034324), we get a palindrome (547650056745).

The spelling of 423430022421 in words is "four hundred twenty-three billion, four hundred thirty million, twenty-two thousand, four hundred twenty-one".