123434040000 has 140 divisors (see below), whose sum is σ = 408102134264. Its totient is φ = 32915712000.

The previous prime is 123434039969. The next prime is 123434040029. The reversal of 123434040000 is 40434321.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 394309 + ... + 634308.

Almost surely, 2^123434040000 is an apocalyptic number.

123434040000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123434040000 is an abundant number, since it is smaller than the sum of its proper divisors (284668094264).

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

123434040000 is an equidigital number, since it uses as much as digits as its factorization.

123434040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028652 (or 1028627 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 123434040000 its reverse (40434321), we get a palindrome (123474474321).

The spelling of 123434040000 in words is "one hundred twenty-three billion, four hundred thirty-four million, forty thousand".