34012243420 has 72 divisors (see below), whose sum is σ = 74078550000. Its totient is φ = 13117138944.

The previous prime is 34012243411. The next prime is 34012243423. The reversal of 34012243420 is 2434221043.

It is a happy number.

It is a super-2 number, since 2×34012243420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34012243423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21007371 + ... + 21008989.

It is an arithmetic number, because the mean of its divisors is an integer number (1028868750).

Almost surely, 2^34012243420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34012243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37039275000).

34012243420 is an abundant number, since it is smaller than the sum of its proper divisors (40066306580).

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

34012243420 is a wasteful number, since it uses less digits than its factorization.

34012243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935 (or 2904 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 34012243420 its reverse (2434221043), we get a palindrome (36446464463).

The spelling of 34012243420 in words is "thirty-four billion, twelve million, two hundred forty-three thousand, four hundred twenty".