123543434 has 32 divisors (see below), whose sum is σ = 225033600. Its totient is φ = 49688640.

The previous prime is 123543421. The next prime is 123543467. The reversal of 123543434 is 434345321.

It is a junction number, because it is equal to n+sod(n) for n = 123543397 and 123543406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26864 + ... + 31124.

It is an arithmetic number, because the mean of its divisors is an integer number (7032300).

Almost surely, 2^123543434 is an apocalyptic number.

123543434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123543434 is a deficient number, since it is larger than the sum of its proper divisors (101490166).

123543434 is a wasteful number, since it uses less digits than its factorization.

123543434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398.

The product of its digits is 17280, while the sum is 29.

The square root of 123543434 is about 11115.0094017054. The cubic root of 123543434 is about 498.0503193725.

Adding to 123543434 its reverse (434345321), we get a palindrome (557888755).

The spelling of 123543434 in words is "one hundred twenty-three million, five hundred forty-three thousand, four hundred thirty-four".