20025142 has 4 divisors (see below), whose sum is σ = 30037716. Its totient is φ = 10012570.

The previous prime is 20025139. The next prime is 20025151. The reversal of 20025142 is 24152002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5006284 + ... + 5006287.

It is an arithmetic number, because the mean of its divisors is an integer number (7509429).

Almost surely, 2^20025142 is an apocalyptic number.

20025142 is a deficient number, since it is larger than the sum of its proper divisors (10012574).

20025142 is a wasteful number, since it uses less digits than its factorization.

20025142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012573.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20025142 is about 4474.9460331941. The cubic root of 20025142 is about 271.5554571768. Note that the first 3 decimals are identical.

Adding to 20025142 its reverse (24152002), we get a palindrome (44177144).

The spelling of 20025142 in words is "twenty million, twenty-five thousand, one hundred forty-two".