421123352530 has 16 divisors (see below), whose sum is σ = 758071664640. Its totient is φ = 168438312112.

The previous prime is 421123352509. The next prime is 421123352539. The reversal of 421123352530 is 35253321124.

It is a super-2 number, since 2×421123352530² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421123352492 and 421123352501.

It is not an unprimeable number, because it can be changed into a prime (421123352539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217344 + ... + 1524523.

It is an arithmetic number, because the mean of its divisors is an integer number (47379479040).

Almost surely, 2^421123352530 is an apocalyptic number.

421123352530 is a deficient number, since it is larger than the sum of its proper divisors (336948312110).

421123352530 is a wasteful number, since it uses less digits than its factorization.

421123352530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757233.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 421123352530 its reverse (35253321124), we get a palindrome (456376673654).

The spelling of 421123352530 in words is "four hundred twenty-one billion, one hundred twenty-three million, three hundred fifty-two thousand, five hundred thirty".