43045420 has 96 divisors (see below), whose sum is σ = 105670656. Its totient is φ = 14572800.

The previous prime is 43045417. The next prime is 43045427. The reversal of 43045420 is 2454034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 43045391 and 43045400.

It is not an unprimeable number, because it can be changed into a prime (43045427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237730 + ... + 237910.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 2^43045420 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 43045420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52835328).

43045420 is an abundant number, since it is smaller than the sum of its proper divisors (62625236).

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

43045420 is a wasteful number, since it uses less digits than its factorization.

43045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43045420 is about 6560.9008527793. The cubic root of 43045420 is about 350.4631148342.

Adding to 43045420 its reverse (2454034), we get a palindrome (45499454).

The spelling of 43045420 in words is "forty-three million, forty-five thousand, four hundred twenty".