20089142 has 4 divisors (see below), whose sum is σ = 30133716. Its totient is φ = 10044570.

The previous prime is 20089123. The next prime is 20089151. The reversal of 20089142 is 24198002.

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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5022284 + ... + 5022287.

It is an arithmetic number, because the mean of its divisors is an integer number (7533429).

Almost surely, 2^20089142 is an apocalyptic number.

20089142 is a deficient number, since it is larger than the sum of its proper divisors (10044574).

20089142 is a wasteful number, since it uses less digits than its factorization.

20089142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044573.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20089142 is about 4482.0912529756. The cubic root of 20089142 is about 271.8444450094.

The spelling of 20089142 in words is "twenty million, eighty-nine thousand, one hundred forty-two".