242130413221021 has 32 divisors (see below), whose sum is σ = 262297508080608. Its totient is φ = 222186890280960.

The previous prime is 242130413221001. The next prime is 242130413221091. The reversal of 242130413221021 is 120122314031242.

It can be written as a sum of positive squares in 16 ways, for example, as 95826752904996 + 146303660316025 = 9789114^2 + 12095605^2 .

It is a cyclic number.

It is not a de Polignac number, because 242130413221021 - 2¹⁷ = 242130413089949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242130413221001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6170322961 + ... + 6170362201.

It is an arithmetic number, because the mean of its divisors is an integer number (8196797127519).

Almost surely, 2^{242130413221021} is an apocalyptic number.

It is an amenable number.

242130413221021 is a deficient number, since it is larger than the sum of its proper divisors (20167094859587).

242130413221021 is a wasteful number, since it uses less digits than its factorization.

242130413221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42721.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 242130413221021 its reverse (120122314031242), we get a palindrome (362252727252263).

The spelling of 242130413221021 in words is "two hundred forty-two trillion, one hundred thirty billion, four hundred thirteen million, two hundred twenty-one thousand, twenty-one".