20112142 has 8 divisors (see below), whose sum is σ = 30196656. Its totient is φ = 10046592.

The previous prime is 20112133. The next prime is 20112151. The reversal of 20112142 is 24121102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20112133) and next prime (20112151).

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

It is a congruent number.

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, 1698 + ... + 6565.

It is an arithmetic number, because the mean of its divisors is an integer number (3774582).

Almost surely, 2^20112142 is an apocalyptic number.

20112142 is a deficient number, since it is larger than the sum of its proper divisors (10084514).

20112142 is a wasteful number, since it uses less digits than its factorization.

20112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20112142 is about 4484.6562856032. The cubic root of 20112142 is about 271.9481500793.

Adding to 20112142 its reverse (24121102), we get a palindrome (44233244).

The spelling of 20112142 in words is "twenty million, one hundred twelve thousand, one hundred forty-two".