342121121 has 2 divisors, whose sum is σ = 342121122. Its totient is φ = 342121120.

The previous prime is 342121099. The next prime is 342121139. The reversal of 342121121 is 121121243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339886096 + 2235025 = 18436^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 342121121 - 2⁶ = 342121057 is a prime.

It is a super-2 number, since 2×342121121² = 234093722868593282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 342121121.

It is not a weakly prime, because it can be changed into another prime (342121151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171060560 + 171060561.

It is an arithmetic number, because the mean of its divisors is an integer number (171060561).

Almost surely, 2^342121121 is an apocalyptic number.

It is an amenable number.

342121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

342121121 is an equidigital number, since it uses as much as digits as its factorization.

342121121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 342121121 is about 18496.5164558086. The cubic root of 342121121 is about 699.4016117486.

Adding to 342121121 its reverse (121121243), we get a palindrome (463242364).

It can be divided in two parts, 3421 and 21121, that added together give a palindrome (24542).

The spelling of 342121121 in words is "three hundred forty-two million, one hundred twenty-one thousand, one hundred twenty-one".