242171803 has 2 divisors, whose sum is σ = 242171804. Its totient is φ = 242171802.

The previous prime is 242171791. The next prime is 242171821. The reversal of 242171803 is 308171242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242171803 - 2¹³ = 242163611 is a prime.

It is not a weakly prime, because it can be changed into another prime (242171843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121085901 + 121085902.

It is an arithmetic number, because the mean of its divisors is an integer number (121085902).

Almost surely, 2^242171803 is an apocalyptic number.

242171803 is a deficient number, since it is larger than the sum of its proper divisors (1).

242171803 is an equidigital number, since it uses as much as digits as its factorization.

242171803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 242171803 is about 15561.8701639617. The cubic root of 242171803 is about 623.3154020471.

The spelling of 242171803 in words is "two hundred forty-two million, one hundred seventy-one thousand, eight hundred three".