12434020340 has 96 divisors (see below), whose sum is σ = 31278127104. Its totient is φ = 4059538560.

The previous prime is 12434020327. The next prime is 12434020351. The reversal of 12434020340 is 4302043421.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 722435 + ... + 739445.

It is an arithmetic number, because the mean of its divisors is an integer number (325813824).

Almost surely, 2^12434020340 is an apocalyptic number.

12434020340 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 12434020340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15639063552).

12434020340 is an abundant number, since it is smaller than the sum of its proper divisors (18844106764).

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

12434020340 is a wasteful number, since it uses less digits than its factorization.

12434020340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17277 (or 17275 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12434020340 its reverse (4302043421), we get a palindrome (16736063761).

The spelling of 12434020340 in words is "twelve billion, four hundred thirty-four million, twenty thousand, three hundred forty".