242011387 has 2 divisors, whose sum is σ = 242011388. Its totient is φ = 242011386.

The previous prime is 242011331. The next prime is 242011391. The reversal of 242011387 is 783110242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242011387 is a prime.

It is a super-2 number, since 2×242011387² = 117139022875327538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242011307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121005693 + 121005694.

It is an arithmetic number, because the mean of its divisors is an integer number (121005694).

Almost surely, 2^242011387 is an apocalyptic number.

242011387 is a deficient number, since it is larger than the sum of its proper divisors (1).

242011387 is an equidigital number, since it uses as much as digits as its factorization.

242011387 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 242011387 is about 15556.7151738405. The cubic root of 242011387 is about 623.1777424072.

The spelling of 242011387 in words is "two hundred forty-two million, eleven thousand, three hundred eighty-seven".