20442067 has 8 divisors (see below), whose sum is σ = 21005712. Its totient is φ = 19881600.

The previous prime is 20442061. The next prime is 20442091. The reversal of 20442067 is 76024402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18192 + ... + 19282.

It is an arithmetic number, because the mean of its divisors is an integer number (2625714).

Almost surely, 2^20442067 is an apocalyptic number.

20442067 is a deficient number, since it is larger than the sum of its proper divisors (563645).

20442067 is a wasteful number, since it uses less digits than its factorization.

20442067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20442067 is about 4521.2904131453. The cubic root of 20442067 is about 273.4271290565.

Adding to 20442067 its reverse (76024402), we get a palindrome (96466469).

The spelling of 20442067 in words is "twenty million, four hundred forty-two thousand, sixty-seven".