242053073557 has 4 divisors (see below), whose sum is σ = 248595048556. Its totient is φ = 235511098560.

The previous prime is 242053073543. The next prime is 242053073573. The reversal of 242053073557 is 755370350242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755370350242 = 2 ⋅377685175121.

It can be written as a sum of positive squares in 2 ways, for example, as 225094262481 + 16958811076 = 474441^2 + 130226^2 .

It is a cyclic number.

It is not a de Polignac number, because 242053073557 - 2¹⁹ = 242052549269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242053073527) 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, 3270987444 + ... + 3270987517.

It is an arithmetic number, because the mean of its divisors is an integer number (62148762139).

Almost surely, 2^242053073557 is an apocalyptic number.

It is an amenable number.

242053073557 is a deficient number, since it is larger than the sum of its proper divisors (6541974999).

242053073557 is an equidigital number, since it uses as much as digits as its factorization.

242053073557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541974998.

The product of its (nonzero) digits is 882000, while the sum is 43.

The spelling of 242053073557 in words is "two hundred forty-two billion, fifty-three million, seventy-three thousand, five hundred fifty-seven".