19242039 has 4 divisors (see below), whose sum is σ = 25656056. Its totient is φ = 12828024.

The previous prime is 19242029. The next prime is 19242049. The reversal of 19242039 is 93024291.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19242029) and next prime (19242049).

It is not a de Polignac number, because 19242039 - 2¹² = 19237943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19241997 and 19242015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19242029) 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 3 ways as a sum of consecutive naturals, for example, 3207004 + ... + 3207009.

It is an arithmetic number, because the mean of its divisors is an integer number (6414014).

Almost surely, 2^19242039 is an apocalyptic number.

19242039 is a deficient number, since it is larger than the sum of its proper divisors (6414017).

19242039 is an equidigital number, since it uses as much as digits as its factorization.

19242039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414016.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 19242039 is about 4386.5748597283. The cubic root of 19242039 is about 267.9684701527.

The spelling of 19242039 in words is "nineteen million, two hundred forty-two thousand, thirty-nine".