242020187 has 2 divisors, whose sum is σ = 242020188. Its totient is φ = 242020186.

The previous prime is 242020169. The next prime is 242020201. The reversal of 242020187 is 781020242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242020187 - 2¹⁴ = 242003803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242020117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121010093 + 121010094.

It is an arithmetic number, because the mean of its divisors is an integer number (121010094).

Almost surely, 2^242020187 is an apocalyptic number.

242020187 is a deficient number, since it is larger than the sum of its proper divisors (1).

242020187 is an equidigital number, since it uses as much as digits as its factorization.

242020187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 242020187 is about 15556.9980073278. The cubic root of 242020187 is about 623.1852956298.

The spelling of 242020187 in words is "two hundred forty-two million, twenty thousand, one hundred eighty-seven".