43703421 has 8 divisors (see below), whose sum is σ = 59069760. Its totient is φ = 28736352.

The previous prime is 43703369. The next prime is 43703431. The reversal of 43703421 is 12430734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43703421 - 2⁷ = 43703293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43703391 and 43703400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43703431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99561 + ... + 99998.

It is an arithmetic number, because the mean of its divisors is an integer number (7383720).

Almost surely, 2^43703421 is an apocalyptic number.

It is an amenable number.

43703421 is a deficient number, since it is larger than the sum of its proper divisors (15366339).

43703421 is a wasteful number, since it uses less digits than its factorization.

43703421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199635.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 43703421 is about 6610.8562985441. The cubic root of 43703421 is about 352.2398422449.

The spelling of 43703421 in words is "forty-three million, seven hundred three thousand, four hundred twenty-one".