12434040 has 128 divisors (see below), whose sum is σ = 42984000. Its totient is φ = 3193344.

The previous prime is 12434039. The next prime is 12434083. The reversal of 12434040 is 4043421.

12434040 = T₂₄ + T₂₅ + ... + T₄₂₀.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31122 + ... + 31518.

Almost surely, 2^12434040 is an apocalyptic number.

12434040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12434040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21492000).

12434040 is an abundant number, since it is smaller than the sum of its proper divisors (30549960).

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

12434040 is a wasteful number, since it uses less digits than its factorization.

12434040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12434040 is about 3526.1934150015. The cubic root of 12434040 is about 231.6705092842.

Adding to 12434040 its reverse (4043421), we get a palindrome (16477461).

The spelling of 12434040 in words is "twelve million, four hundred thirty-four thousand, forty".