242010121645 has 8 divisors (see below), whose sum is σ = 290507412600. Its totient is φ = 193544586240.

The previous prime is 242010121631. The next prime is 242010121697. The reversal of 242010121645 is 546121010242.

It can be written as a sum of positive squares in 4 ways, for example, as 1413985609 + 240596136036 = 37603^2 + 490506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242010121645 - 2³⁷ = 104571168173 is a prime.

It is a super-3 number, since 3×242010121645³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7922116 + ... + 7952605.

It is an arithmetic number, because the mean of its divisors is an integer number (36313426575).

Almost surely, 2^242010121645 is an apocalyptic number.

It is an amenable number.

242010121645 is a deficient number, since it is larger than the sum of its proper divisors (48497290955).

242010121645 is a wasteful number, since it uses less digits than its factorization.

242010121645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15877775.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 242010121645 its reverse (546121010242), we get a palindrome (788131131887).

The spelling of 242010121645 in words is "two hundred forty-two billion, ten million, one hundred twenty-one thousand, six hundred forty-five".