42020224 has 16 divisors (see below), whose sum is σ = 83712420. Its totient is φ = 21010048.

The previous prime is 42020219. The next prime is 42020227. The reversal of 42020224 is 42202024.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 42020198 and 42020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164014 + ... + 164269.

Almost surely, 2^42020224 is an apocalyptic number.

It is an amenable number.

42020224 is a deficient number, since it is larger than the sum of its proper divisors (41692196).

42020224 is an equidigital number, since it uses as much as digits as its factorization.

42020224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328297 (or 328285 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42020224 is about 6482.3008260956. The cubic root of 42020224 is about 347.6584485222.

Adding to 42020224 its reverse (42202024), we get a palindrome (84222248).

The spelling of 42020224 in words is "forty-two million, twenty thousand, two hundred twenty-four".