42021230 has 16 divisors (see below), whose sum is σ = 78927264. Its totient is φ = 16077600.

The previous prime is 42021227. The next prime is 42021241. The reversal of 42021230 is 3212024.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 91121 + ... + 91580.

It is an arithmetic number, because the mean of its divisors is an integer number (4932954).

Almost surely, 2^42021230 is an apocalyptic number.

42021230 is a deficient number, since it is larger than the sum of its proper divisors (36906034).

42021230 is a wasteful number, since it uses less digits than its factorization.

42021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182731.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42021230 is about 6482.3784215363. The cubic root of 42021230 is about 347.6612229133.

Adding to 42021230 its reverse (3212024), we get a palindrome (45233254).

The spelling of 42021230 in words is "forty-two million, twenty-one thousand, two hundred thirty".