123111424434 has 16 divisors (see below), whose sum is σ = 246403778400. Its totient is φ = 41006986560.

The previous prime is 123111424427. The next prime is 123111424441. The reversal of 123111424434 is 434424111321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123111424427) and next prime (123111424441).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7529884 + ... + 7546215.

It is an arithmetic number, because the mean of its divisors is an integer number (15400236150).

Almost surely, 2^123111424434 is an apocalyptic number.

123111424434 is an abundant number, since it is smaller than the sum of its proper divisors (123292353966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123111424434 is a wasteful number, since it uses less digits than its factorization.

123111424434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15077465.

The product of its digits is 9216, while the sum is 30.

Adding to 123111424434 its reverse (434424111321), we get a palindrome (557535535755).

The spelling of 123111424434 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred twenty-four thousand, four hundred thirty-four".