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43316421 = 340136007
BaseRepresentation
bin1010010100111…
…1010011000101
310000111200221220
42211033103011
542042111141
64144230553
71034116641
oct245172305
9100450856
1043316421
11224a62a5
121260b459
138c88225
145a77c21
153c09766
hex294f4c5

43316421 has 8 divisors (see below), whose sum is σ = 57900864. Its totient is φ = 28804800.

The previous prime is 43316407. The next prime is 43316453. The reversal of 43316421 is 12461334.

43316421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 43316421 - 210 = 43315397 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 43316391 and 43316400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43316921) 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 7 ways as a sum of consecutive naturals, for example, 16801 + ... + 19206.

It is an arithmetic number, because the mean of its divisors is an integer number (7237608).

Almost surely, 243316421 is an apocalyptic number.

It is an amenable number.

43316421 is a deficient number, since it is larger than the sum of its proper divisors (14584443).

43316421 is a wasteful number, since it uses less digits than its factorization.

43316421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36411.

The product of its digits is 1728, while the sum is 24.

The square root of 43316421 is about 6581.5211767493. The cubic root of 43316421 is about 351.1970468504.

Adding to 43316421 its reverse (12461334), we get a palindrome (55777755).

The spelling of 43316421 in words is "forty-three million, three hundred sixteen thousand, four hundred twenty-one".

Divisors: 1 3 401 1203 36007 108021 14438807 43316421