19242347 has 4 divisors (see below), whose sum is σ = 19256760. Its totient is φ = 19227936.

The previous prime is 19242343. The next prime is 19242367. The reversal of 19242347 is 74324291.

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

It is a cyclic number.

It is not a de Polignac number, because 19242347 - 2² = 19242343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19242343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973 + ... + 7950.

It is an arithmetic number, because the mean of its divisors is an integer number (4814190).

Almost surely, 2^19242347 is an apocalyptic number.

19242347 is a deficient number, since it is larger than the sum of its proper divisors (14413).

19242347 is a wasteful number, since it uses less digits than its factorization.

19242347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14412.

The product of its digits is 12096, while the sum is 32.

The square root of 19242347 is about 4386.6099667055. The cubic root of 19242347 is about 267.9698999016.

The spelling of 19242347 in words is "nineteen million, two hundred forty-two thousand, three hundred forty-seven".