43420155 has 8 divisors (see below), whose sum is σ = 69472272. Its totient is φ = 23157408.

The previous prime is 43420133. The next prime is 43420199. The reversal of 43420155 is 55102434.

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

It is not a de Polignac number, because 43420155 - 2¹¹ = 43418107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447324 + ... + 1447353.

It is an arithmetic number, because the mean of its divisors is an integer number (8684034).

Almost surely, 2^43420155 is an apocalyptic number.

43420155 is a deficient number, since it is larger than the sum of its proper divisors (26052117).

43420155 is a wasteful number, since it uses less digits than its factorization.

43420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894685.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 43420155 is about 6589.3971651434. The cubic root of 43420155 is about 351.4771718051.

Adding to 43420155 its reverse (55102434), we get a palindrome (98522589).

The spelling of 43420155 in words is "forty-three million, four hundred twenty thousand, one hundred fifty-five".