19142271 has 16 divisors (see below), whose sum is σ = 28655200. Its totient is φ = 12628224.

The previous prime is 19142269. The next prime is 19142287. The reversal of 19142271 is 17224191.

It is not a de Polignac number, because 19142271 - 2¹ = 19142269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142251) 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, 1036 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (1790950).

Almost surely, 2^19142271 is an apocalyptic number.

19142271 is a deficient number, since it is larger than the sum of its proper divisors (9512929).

19142271 is an equidigital number, since it uses as much as digits as its factorization.

19142271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415 (or 7409 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 19142271 is about 4375.1881102417. The cubic root of 19142271 is about 267.5045377284.

The spelling of 19142271 in words is "nineteen million, one hundred forty-two thousand, two hundred seventy-one".