121420339 has 2 divisors, whose sum is σ = 121420340. Its totient is φ = 121420338.

The previous prime is 121420337. The next prime is 121420349. The reversal of 121420339 is 933024121.

It is a weak prime.

It is an emirp because it is prime and its reverse (933024121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121420339 - 2¹ = 121420337 is a prime.

Together with 121420337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121420331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710169 + 60710170.

It is an arithmetic number, because the mean of its divisors is an integer number (60710170).

Almost surely, 2^121420339 is an apocalyptic number.

121420339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121420339 is an equidigital number, since it uses as much as digits as its factorization.

121420339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 121420339 is about 11019.0897536956. The cubic root of 121420339 is about 495.1808188842.

The spelling of 121420339 in words is "one hundred twenty-one million, four hundred twenty thousand, three hundred thirty-nine".