43421490 has 96 divisors (see below), whose sum is σ = 130141440. Its totient is φ = 9839232.

The previous prime is 43421489. The next prime is 43421527. The reversal of 43421490 is 9412434.

43421490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 98691 + ... + 99129.

It is an arithmetic number, because the mean of its divisors is an integer number (1355640).

Almost surely, 2^43421490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43421490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65070720).

43421490 is an abundant number, since it is smaller than the sum of its proper divisors (86719950).

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

43421490 is a wasteful number, since it uses less digits than its factorization.

43421490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 43421490 is about 6589.4984634644. The cubic root of 43421490 is about 351.4807739512.

It can be divided in two parts, 4342 and 1490, that added together give a cube (5832 = 18³).

The spelling of 43421490 in words is "forty-three million, four hundred twenty-one thousand, four hundred ninety".