42998243 has 4 divisors (see below), whose sum is σ = 43018080. Its totient is φ = 42978408.

The previous prime is 42998227. The next prime is 42998269. The reversal of 42998243 is 34289924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42998243 - 2⁴ = 42998227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42998243.

It is not an unprimeable number, because it can be changed into a prime (42998203) 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 3 ways as a sum of consecutive naturals, for example, 6203 + ... + 11156.

It is an arithmetic number, because the mean of its divisors is an integer number (10754520).

Almost surely, 2^42998243 is an apocalyptic number.

42998243 is a deficient number, since it is larger than the sum of its proper divisors (19837).

42998243 is a wasteful number, since it uses less digits than its factorization.

42998243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19836.

The product of its digits is 124416, while the sum is 41.

The square root of 42998243 is about 6557.3045529394. The cubic root of 42998243 is about 350.3350342912.

The spelling of 42998243 in words is "forty-two million, nine hundred ninety-eight thousand, two hundred forty-three".