19242473 has 2 divisors, whose sum is σ = 19242474. Its totient is φ = 19242472.

The previous prime is 19242469. The next prime is 19242481. The reversal of 19242473 is 37424291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18550249 + 692224 = 4307^2 + 832^2 .

It is an emirp because it is prime and its reverse (37424291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19242473 - 2² = 19242469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19242463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9621236 + 9621237.

It is an arithmetic number, because the mean of its divisors is an integer number (9621237).

Almost surely, 2^19242473 is an apocalyptic number.

It is an amenable number.

19242473 is a deficient number, since it is larger than the sum of its proper divisors (1).

19242473 is an equidigital number, since it uses as much as digits as its factorization.

19242473 is an evil number, because the sum of its binary digits is even.

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

The square root of 19242473 is about 4386.6243285697. The cubic root of 19242473 is about 267.9704847944.

The spelling of 19242473 in words is "nineteen million, two hundred forty-two thousand, four hundred seventy-three".