22143139 has 8 divisors (see below), whose sum is σ = 22472640. Its totient is φ = 21816000.

The previous prime is 22143137. The next prime is 22143161. The reversal of 22143139 is 93134122.

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

It is not a de Polignac number, because 22143139 - 2¹ = 22143137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22143133) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 26967 + ... + 27775.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^22143139 is an apocalyptic number.

22143139 is a deficient number, since it is larger than the sum of its proper divisors (329501).

22143139 is a wasteful number, since it uses less digits than its factorization.

22143139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its digits is 1296, while the sum is 25.

The square root of 22143139 is about 4705.6496894690. The cubic root of 22143139 is about 280.8103184968.

The spelling of 22143139 in words is "twenty-two million, one hundred forty-three thousand, one hundred thirty-nine".