20142196 has 6 divisors (see below), whose sum is σ = 35248850. Its totient is φ = 10071096.

The previous prime is 20142169. The next prime is 20142197. The reversal of 20142196 is 69124102.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 8785296 = 3370^2 + 2964^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20142196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2517771 + ... + 2517778.

Almost surely, 2^20142196 is an apocalyptic number.

It is an amenable number.

20142196 is a deficient number, since it is larger than the sum of its proper divisors (15106654).

20142196 is a wasteful number, since it uses less digits than its factorization.

20142196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035553 (or 5035551 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20142196 is about 4488.0057932226. The cubic root of 20142196 is about 272.0835419566.

Adding to 20142196 its reverse (69124102), we get a palindrome (89266298).

The spelling of 20142196 in words is "twenty million, one hundred forty-two thousand, one hundred ninety-six".