242442427 has 2 divisors, whose sum is σ = 242442428. Its totient is φ = 242442426.

The previous prime is 242442397. The next prime is 242442439. The reversal of 242442427 is 724244242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242442427 is a prime.

It is not a weakly prime, because it can be changed into another prime (242442467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121221213 + 121221214.

It is an arithmetic number, because the mean of its divisors is an integer number (121221214).

Almost surely, 2^242442427 is an apocalyptic number.

242442427 is a deficient number, since it is larger than the sum of its proper divisors (1).

242442427 is an equidigital number, since it uses as much as digits as its factorization.

242442427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28672, while the sum is 31.

The square root of 242442427 is about 15570.5628350423. The cubic root of 242442427 is about 623.5474980359.

Adding to 242442427 its reverse (724244242), we get a palindrome (966686669).

The spelling of 242442427 in words is "two hundred forty-two million, four hundred forty-two thousand, four hundred twenty-seven".