123121424431043 has 4 divisors (see below), whose sum is σ = 123415270313160. Its totient is φ = 122827578548928.

The previous prime is 123121424431037. The next prime is 123121424431091. The reversal of 123121424431043 is 340134424121321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123121424431043 - 2¹² = 123121424426947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123121424430994 and 123121424431012.

It is not an unprimeable number, because it can be changed into a prime (123121424433043) 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, 146922940430 + ... + 146922941267.

It is an arithmetic number, because the mean of its divisors is an integer number (30853817578290).

Almost surely, 2^{123121424431043} is an apocalyptic number.

123121424431043 is a deficient number, since it is larger than the sum of its proper divisors (293845882117).

123121424431043 is an equidigital number, since it uses as much as digits as its factorization.

123121424431043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293845882116.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 123121424431043 its reverse (340134424121321), we get a palindrome (463255848552364).

The spelling of 123121424431043 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, four hundred twenty-four million, four hundred thirty-one thousand, forty-three".