43021490 has 32 divisors (see below), whose sum is σ = 80745984. Its totient is φ = 16485120.

The previous prime is 43021469. The next prime is 43021493. The reversal of 43021490 is 9412034.

It is not an unprimeable number, because it can be changed into a prime (43021493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32522 + ... + 33818.

It is an arithmetic number, because the mean of its divisors is an integer number (2523312).

Almost surely, 2^43021490 is an apocalyptic number.

43021490 is a deficient number, since it is larger than the sum of its proper divisors (37724494).

43021490 is a wasteful number, since it uses less digits than its factorization.

43021490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 43021490 is about 6559.0769167620. The cubic root of 43021490 is about 350.3981591283.

The spelling of 43021490 in words is "forty-three million, twenty-one thousand, four hundred ninety".