123423434 has 8 divisors (see below), whose sum is σ = 196025508. Its totient is φ = 58081600.

The previous prime is 123423413. The next prime is 123423463. The reversal of 123423434 is 434324321.

It can be written as a sum of positive squares in 2 ways, for example, as 120012025 + 3411409 = 10955^2 + 1847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815017 + ... + 1815084.

Almost surely, 2^123423434 is an apocalyptic number.

123423434 is a deficient number, since it is larger than the sum of its proper divisors (72602074).

123423434 is a wasteful number, since it uses less digits than its factorization.

123423434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630120.

The product of its digits is 6912, while the sum is 26.

The square root of 123423434 is about 11109.6099841534. The cubic root of 123423434 is about 497.8890120022.

Adding to 123423434 its reverse (434324321), we get a palindrome (557747755).

The spelling of 123423434 in words is "one hundred twenty-three million, four hundred twenty-three thousand, four hundred thirty-four".