19242655 has 4 divisors (see below), whose sum is σ = 23091192. Its totient is φ = 15394120.

The previous prime is 19242593. The next prime is 19242667. The reversal of 19242655 is 55624291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55624291 = 29 ⋅1918079.

It is not a de Polignac number, because 19242655 - 2⁷ = 19242527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19242655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924261 + ... + 1924270.

It is an arithmetic number, because the mean of its divisors is an integer number (5772798).

Almost surely, 2^19242655 is an apocalyptic number.

19242655 is a deficient number, since it is larger than the sum of its proper divisors (3848537).

19242655 is an equidigital number, since it uses as much as digits as its factorization.

19242655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848536.

The product of its digits is 21600, while the sum is 34.

The square root of 19242655 is about 4386.6450734018. The cubic root of 19242655 is about 267.9713296351.

The spelling of 19242655 in words is "nineteen million, two hundred forty-two thousand, six hundred fifty-five".