20142195 has 16 divisors (see below), whose sum is σ = 34123680. Its totient is φ = 10110464.

The previous prime is 20142169. The next prime is 20142197. The reversal of 20142195 is 59124102.

It is a cyclic number.

It is not a de Polignac number, because 20142195 - 2⁵ = 20142163 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39240 + ... + 39749.

It is an arithmetic number, because the mean of its divisors is an integer number (2132730).

Almost surely, 2^20142195 is an apocalyptic number.

20142195 is a deficient number, since it is larger than the sum of its proper divisors (13981485).

20142195 is a wasteful number, since it uses less digits than its factorization.

20142195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79014.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 20142195 is about 4488.0056818146. The cubic root of 20142195 is about 272.0835374538.

Adding to 20142195 its reverse (59124102), we get a palindrome (79266297).

The spelling of 20142195 in words is "twenty million, one hundred forty-two thousand, one hundred ninety-five".