421433332424423 has 64 divisors (see below), whose sum is σ = 476757956505600. Its totient is φ = 369222504456960.

The previous prime is 421433332424413. The next prime is 421433332424441. The reversal of 421433332424423 is 324424233334124.

It is not a de Polignac number, because 421433332424423 - 2¹⁰ = 421433332423399 is a prime.

It is a super-3 number, since 3×421433332424423³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421433332424413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10416285968 + ... + 10416326426.

It is an arithmetic number, because the mean of its divisors is an integer number (7449343070400).

Almost surely, 2^{421433332424423} is an apocalyptic number.

421433332424423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

421433332424423 is a deficient number, since it is larger than the sum of its proper divisors (55324624081177).

421433332424423 is a wasteful number, since it uses less digits than its factorization.

421433332424423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41652.

The product of its digits is 3981312, while the sum is 44.

Adding to 421433332424423 its reverse (324424233334124), we get a palindrome (745857565758547).

The spelling of 421433332424423 in words is "four hundred twenty-one trillion, four hundred thirty-three billion, three hundred thirty-two million, four hundred twenty-four thousand, four hundred twenty-three".