42021304 has 16 divisors (see below), whose sum is σ = 84850920. Its totient is φ = 19394400.

The previous prime is 42021257. The next prime is 42021313. The reversal of 42021304 is 40312024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201922 + ... + 202129.

Almost surely, 2^42021304 is an apocalyptic number.

It is an amenable number.

42021304 is an abundant number, since it is smaller than the sum of its proper divisors (42829616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42021304 is a wasteful number, since it uses less digits than its factorization.

42021304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404070 (or 404066 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42021304 is about 6482.3841293154. The cubic root of 42021304 is about 347.6614269920.

Adding to 42021304 its reverse (40312024), we get a palindrome (82333328).

The spelling of 42021304 in words is "forty-two million, twenty-one thousand, three hundred four".