20106442 has 8 divisors (see below), whose sum is σ = 30181536. Its totient is φ = 10045932.

The previous prime is 20106421. The next prime is 20106469. The reversal of 20106442 is 24460102.

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

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, 973 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (3772692).

Almost surely, 2^20106442 is an apocalyptic number.

20106442 is a deficient number, since it is larger than the sum of its proper divisors (10075094).

20106442 is a wasteful number, since it uses less digits than its factorization.

20106442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20106442 is about 4484.0207403624. The cubic root of 20106442 is about 271.9224566297.

Adding to 20106442 its reverse (24460102), we get a palindrome (44566544).

The spelling of 20106442 in words is "twenty million, one hundred six thousand, four hundred forty-two".