242120544437 has 2 divisors, whose sum is σ = 242120544438. Its totient is φ = 242120544436.

The previous prime is 242120544409. The next prime is 242120544443. The reversal of 242120544437 is 734445021242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215290432036 + 26830112401 = 463994^2 + 163799^2 .

It is a cyclic number.

It is not a de Polignac number, because 242120544437 - 2¹⁸ = 242120282293 is a prime.

It is a super-3 number, since 3×242120544437³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242120544437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242120544737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060272218 + 121060272219.

It is an arithmetic number, because the mean of its divisors is an integer number (121060272219).

Almost surely, 2^242120544437 is an apocalyptic number.

It is an amenable number.

242120544437 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120544437 is an equidigital number, since it uses as much as digits as its factorization.

242120544437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 38.

Adding to 242120544437 its reverse (734445021242), we get a palindrome (976565565679).

It can be divided in two parts, 2421205 and 44437, that added together give a palindrome (2465642).

The spelling of 242120544437 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-four thousand, four hundred thirty-seven".