2145242434121 has 8 divisors (see below), whose sum is σ = 2185659806400. Its totient is φ = 2105171992432.

The previous prime is 2145242434109. The next prime is 2145242434183. The reversal of 2145242434121 is 1214342425412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145242434121 - 2²⁶ = 2145175325257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145242436121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86720165 + ... + 86744898.

It is an arithmetic number, because the mean of its divisors is an integer number (273207475800).

Almost surely, 2^{2145242434121} is an apocalyptic number.

It is an amenable number.

2145242434121 is a deficient number, since it is larger than the sum of its proper divisors (40417372279).

2145242434121 is a wasteful number, since it uses less digits than its factorization.

2145242434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173465295.

The product of its digits is 61440, while the sum is 35.

Adding to 2145242434121 its reverse (1214342425412), we get a palindrome (3359584859533).

The spelling of 2145242434121 in words is "two trillion, one hundred forty-five billion, two hundred forty-two million, four hundred thirty-four thousand, one hundred twenty-one".