421205502124 has 12 divisors (see below), whose sum is σ = 804119595048. Its totient is φ = 191457046400.

The previous prime is 421205502059. The next prime is 421205502127.

It is a happy number.

421205502124 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×421205502124² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421205502092 and 421205502101.

It is not an unprimeable number, because it can be changed into a prime (421205502127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4786426117 + ... + 4786426204.

It is an arithmetic number, because the mean of its divisors is an integer number (67009966254).

Almost surely, 2^421205502124 is an apocalyptic number.

421205502124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421205502124 is a deficient number, since it is larger than the sum of its proper divisors (382914092924).

421205502124 is a wasteful number, since it uses less digits than its factorization.

421205502124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572852336 (or 9572852334 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

It can be divided in two parts, 421205 and 502124, that added together give a palindrome (923329).

The spelling of 421205502124 in words is "four hundred twenty-one billion, two hundred five million, five hundred two thousand, one hundred twenty-four".