43153421 has 8 divisors (see below), whose sum is σ = 45061920. Its totient is φ = 41273008.

The previous prime is 43153417. The next prime is 43153423. The reversal of 43153421 is 12435134.

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

It is a cyclic number.

It is not a de Polignac number, because 43153421 - 2² = 43153417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43153423) 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 7 ways as a sum of consecutive naturals, for example, 3851 + ... + 10056.

It is an arithmetic number, because the mean of its divisors is an integer number (5632740).

Almost surely, 2^43153421 is an apocalyptic number.

It is an amenable number.

43153421 is a deficient number, since it is larger than the sum of its proper divisors (1908499).

43153421 is a wasteful number, since it uses less digits than its factorization.

43153421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043.

The product of its digits is 1440, while the sum is 23.

The square root of 43153421 is about 6569.1263498277. The cubic root of 43153421 is about 350.7559741394.

Adding to 43153421 its reverse (12435134), we get a palindrome (55588555).

The spelling of 43153421 in words is "forty-three million, one hundred fifty-three thousand, four hundred twenty-one".