20230442 has 16 divisors (see below), whose sum is σ = 32250312. Its totient is φ = 9484800.

The previous prime is 20230439. The next prime is 20230489. The reversal of 20230442 is 24403202.

It can be written as a sum of positive squares in 4 ways, for example, as 8934121 + 11296321 = 2989^2 + 3361^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20230442.

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, 9692 + ... + 11592.

Almost surely, 2^20230442 is an apocalyptic number.

20230442 is a deficient number, since it is larger than the sum of its proper divisors (12019870).

20230442 is a wasteful number, since it uses less digits than its factorization.

20230442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233.

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

The square root of 20230442 is about 4497.8263639229. The cubic root of 20230442 is about 272.4803094377.

Adding to 20230442 its reverse (24403202), we get a palindrome (44633644).

The spelling of 20230442 in words is "twenty million, two hundred thirty thousand, four hundred forty-two".