19242871 has 2 divisors, whose sum is σ = 19242872. Its totient is φ = 19242870.

The previous prime is 19242841. The next prime is 19242889. The reversal of 19242871 is 17824291.

It is a strong prime.

It is an emirp because it is prime and its reverse (17824291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19242871 - 2¹³ = 19234679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19242841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9621435 + 9621436.

It is an arithmetic number, because the mean of its divisors is an integer number (9621436).

Almost surely, 2^19242871 is an apocalyptic number.

19242871 is a deficient number, since it is larger than the sum of its proper divisors (1).

19242871 is an equidigital number, since it uses as much as digits as its factorization.

19242871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 19242871 is about 4386.6696935147. The cubic root of 19242871 is about 267.9723322963.

The spelling of 19242871 in words is "nineteen million, two hundred forty-two thousand, eight hundred seventy-one".