242020787 has 2 divisors, whose sum is σ = 242020788. Its totient is φ = 242020786.

The previous prime is 242020783. The next prime is 242020819. The reversal of 242020787 is 787020242.

It is a happy number.

It is an a-pointer prime, because the next prime (242020819) can be obtained adding 242020787 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242020787 - 2² = 242020783 is a prime.

It is a super-2 number, since 2×242020787² = 117148122680198738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242020783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121010393 + 121010394.

It is an arithmetic number, because the mean of its divisors is an integer number (121010394).

Almost surely, 2^242020787 is an apocalyptic number.

242020787 is a deficient number, since it is larger than the sum of its proper divisors (1).

242020787 is an equidigital number, since it uses as much as digits as its factorization.

242020787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 242020787 is about 15557.0172912419. The cubic root of 242020787 is about 623.1858106156.

The spelling of 242020787 in words is "two hundred forty-two million, twenty thousand, seven hundred eighty-seven".