242120531441 has 4 divisors (see below), whose sum is σ = 244616619492. Its totient is φ = 239624443392.

The previous prime is 242120531437. The next prime is 242120531479. The reversal of 242120531441 is 144135021242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184301924416 + 57818607025 = 429304^2 + 240455^2 .

It is a cyclic number.

It is not a de Polignac number, because 242120531441 - 2² = 242120531437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242120531491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1248043880 + ... + 1248044073.

It is an arithmetic number, because the mean of its divisors is an integer number (61154154873).

Almost surely, 2^242120531441 is an apocalyptic number.

It is an amenable number.

242120531441 is a deficient number, since it is larger than the sum of its proper divisors (2496088051).

242120531441 is an equidigital number, since it uses as much as digits as its factorization.

242120531441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496088050.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 242120531441 its reverse (144135021242), we get a palindrome (386255552683).

The spelling of 242120531441 in words is "two hundred forty-two billion, one hundred twenty million, five hundred thirty-one thousand, four hundred forty-one".