242120545151 has 2 divisors, whose sum is σ = 242120545152. Its totient is φ = 242120545150.

The previous prime is 242120545123. The next prime is 242120545171. The reversal of 242120545151 is 151545021242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242120545151 - 2⁶ = 242120545087 is a prime.

It is a super-2 number, since 2×242120545151² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242120545171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060272575 + 121060272576.

It is an arithmetic number, because the mean of its divisors is an integer number (121060272576).

Almost surely, 2^242120545151 is an apocalyptic number.

242120545151 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120545151 is an equidigital number, since it uses as much as digits as its factorization.

242120545151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 242120545151 its reverse (151545021242), we get a palindrome (393665566393).

The spelling of 242120545151 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, one hundred fifty-one".