1234123434 has 24 divisors (see below), whose sum is σ = 2701504260. Its totient is φ = 407132928.

The previous prime is 1234123433. The next prime is 1234123441. The reversal of 1234123434 is 4343214321.

It can be written as a sum of positive squares in 2 ways, for example, as 1158381225 + 75742209 = 34035^2 + 8703^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1234123398 and 1234123407.

It is not an unprimeable number, because it can be changed into a prime (1234123433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351669 + ... + 355160.

Almost surely, 2^1234123434 is an apocalyptic number.

1234123434 is an abundant number, since it is smaller than the sum of its proper divisors (1467380826).

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

1234123434 is a wasteful number, since it uses less digits than its factorization.

1234123434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706934 (or 706931 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1234123434 is about 35130.0929973150. The cubic root of 1234123434 is about 1072.6372289236.

Adding to 1234123434 its reverse (4343214321), we get a palindrome (5577337755).

The spelling of 1234123434 in words is "one billion, two hundred thirty-four million, one hundred twenty-three thousand, four hundred thirty-four".