343242440121 has 16 divisors (see below), whose sum is σ = 523060156800. Its totient is φ = 196129515648.

The previous prime is 343242440117. The next prime is 343242440137. The reversal of 343242440121 is 121044242343.

It is not a de Polignac number, because 343242440121 - 2² = 343242440117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343242440161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105895 + ... + 835283.

It is an arithmetic number, because the mean of its divisors is an integer number (32691259800).

Almost surely, 2^343242440121 is an apocalyptic number.

It is an amenable number.

343242440121 is a deficient number, since it is larger than the sum of its proper divisors (179817716679).

343242440121 is a wasteful number, since it uses less digits than its factorization.

343242440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751808.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 343242440121 its reverse (121044242343), we get a palindrome (464286682464).

The spelling of 343242440121 in words is "three hundred forty-three billion, two hundred forty-two million, four hundred forty thousand, one hundred twenty-one".