123424343424321 has 32 divisors (see below), whose sum is σ = 167488131355776. Its totient is φ = 80834582400000.

The previous prime is 123424343424307. The next prime is 123424343424341.

123424343424321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123424343424321 - 2¹⁸ = 123424343162177 is a prime.

It is a super-2 number, since 2×123424343424321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123424343424341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277509721 + ... + 277954121.

It is an arithmetic number, because the mean of its divisors is an integer number (5234004104868).

Almost surely, 2^{123424343424321} is an apocalyptic number.

It is an amenable number.

123424343424321 is a deficient number, since it is larger than the sum of its proper divisors (44063787931455).

123424343424321 is a wasteful number, since it uses less digits than its factorization.

123424343424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451633.

The product of its digits is 1327104, while the sum is 42.

The spelling of 123424343424321 in words is "one hundred twenty-three trillion, four hundred twenty-four billion, three hundred forty-three million, four hundred twenty-four thousand, three hundred twenty-one".