43121034 has 48 divisors (see below), whose sum is σ = 103109760. Its totient is φ = 12914880.

The previous prime is 43121033. The next prime is 43121063. The reversal of 43121034 is 43012134.

43121034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 43120998 and 43121016.

It is not an unprimeable number, because it can be changed into a prime (43121033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16399 + ... + 18845.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^43121034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43121034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51554880).

43121034 is an abundant number, since it is smaller than the sum of its proper divisors (59988726).

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

43121034 is a wasteful number, since it uses less digits than its factorization.

43121034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 43121034 is about 6566.6607952596. The cubic root of 43121034 is about 350.6682037567.

Adding to 43121034 its reverse (43012134), we get a palindrome (86133168).

Subtracting from 43121034 its reverse (43012134), we obtain a square (108900 = 330²).

The spelling of 43121034 in words is "forty-three million, one hundred twenty-one thousand, thirty-four".