19142279 has 16 divisors (see below), whose sum is σ = 21830592. Its totient is φ = 16651008.

The previous prime is 19142269. The next prime is 19142287. The reversal of 19142279 is 97224191.

It is not a de Polignac number, because 19142279 - 2⁸ = 19142023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21389 + ... + 22265.

It is an arithmetic number, because the mean of its divisors is an integer number (1364412).

Almost surely, 2^19142279 is an apocalyptic number.

19142279 is a deficient number, since it is larger than the sum of its proper divisors (2688313).

19142279 is a wasteful number, since it uses less digits than its factorization.

19142279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 9072, while the sum is 35.

The square root of 19142279 is about 4375.1890244880. The cubic root of 19142279 is about 267.5045749938.

The spelling of 19142279 in words is "nineteen million, one hundred forty-two thousand, two hundred seventy-nine".