421321134123 has 40 divisors (see below), whose sum is σ = 646530849360. Its totient is φ = 273230366400.

The previous prime is 421321134121. The next prime is 421321134139. The reversal of 421321134123 is 321431123124.

421321134123 is a `hidden beast` number, since 4 + 2 + 132 + 113 + 412 + 3 = 666.

It is not a de Polignac number, because 421321134123 - 2¹ = 421321134121 is a prime.

It is a super-2 number, since 2×421321134123² (a number of 24 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (421321134121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17073568 + ... + 17098226.

It is an arithmetic number, because the mean of its divisors is an integer number (16163271234).

Almost surely, 2^421321134123 is an apocalyptic number.

421321134123 is a deficient number, since it is larger than the sum of its proper divisors (225209715237).

421321134123 is a wasteful number, since it uses less digits than its factorization.

421321134123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30409 (or 30400 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 421321134123 its reverse (321431123124), we get a palindrome (742752257247).

The spelling of 421321134123 in words is "four hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-four thousand, one hundred twenty-three".