42020243 has 8 divisors (see below), whose sum is σ = 44719200. Its totient is φ = 39346560.

The previous prime is 42020233. The next prime is 42020249. The reversal of 42020243 is 34202024.

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 42020243 - 2⁴ = 42020227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42020249) 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, 2828 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (5589900).

Almost surely, 2^42020243 is an apocalyptic number.

42020243 is a deficient number, since it is larger than the sum of its proper divisors (2698957).

42020243 is a wasteful number, since it uses less digits than its factorization.

42020243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12637.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42020243 is about 6482.3022916245. The cubic root of 42020243 is about 347.6585009217.

Adding to 42020243 its reverse (34202024), we get a palindrome (76222267).

The spelling of 42020243 in words is "forty-two million, twenty thousand, two hundred forty-three".