20042230 has 32 divisors (see below), whose sum is σ = 39146688. Its totient is φ = 7344000.

The previous prime is 20042173. The next prime is 20042249. The reversal of 20042230 is 3224002.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 20042230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19120 + ... + 20140.

It is an arithmetic number, because the mean of its divisors is an integer number (1223334).

Almost surely, 2^20042230 is an apocalyptic number.

20042230 is a deficient number, since it is larger than the sum of its proper divisors (19104458).

20042230 is a wasteful number, since it uses less digits than its factorization.

20042230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20042230 is about 4476.8549228225. The cubic root of 20042230 is about 271.6326771097.

Adding to 20042230 its reverse (3224002), we get a palindrome (23266232).

The spelling of 20042230 in words is "twenty million, forty-two thousand, two hundred thirty".