242401433041021 has 4 divisors (see below), whose sum is σ = 242401814077500. Its totient is φ = 242401052004544.

The previous prime is 242401433040983. The next prime is 242401433041073. The reversal of 242401433041021 is 120140334104242.

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 41903224492900 + 200498208548121 = 6473270^2 + 14159739^2 .

It is a cyclic number.

It is not a de Polignac number, because 242401433041021 - 2⁹ = 242401433040509 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 (242401433041081) 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, 189562396 + ... + 190836853.

It is an arithmetic number, because the mean of its divisors is an integer number (60600453519375).

Almost surely, 2^{242401433041021} is an apocalyptic number.

It is an amenable number.

242401433041021 is a deficient number, since it is larger than the sum of its proper divisors (381036479).

242401433041021 is an equidigital number, since it uses as much as digits as its factorization.

242401433041021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381036478.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 242401433041021 its reverse (120140334104242), we get a palindrome (362541767145263).

The spelling of 242401433041021 in words is "two hundred forty-two trillion, four hundred one billion, four hundred thirty-three million, forty-one thousand, twenty-one".