120241421 has 2 divisors, whose sum is σ = 120241422. Its totient is φ = 120241420.

The previous prime is 120241417. The next prime is 120241423. The reversal of 120241421 is 124142021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117961321 + 2280100 = 10861^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 120241421 - 2² = 120241417 is a prime.

It is a Sophie Germain prime.

Together with 120241423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120241421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120241423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60120710 + 60120711.

It is an arithmetic number, because the mean of its divisors is an integer number (60120711).

Almost surely, 2^120241421 is an apocalyptic number.

It is an amenable number.

120241421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120241421 is an equidigital number, since it uses as much as digits as its factorization.

120241421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 120241421 is about 10965.4649240240. The cubic root of 120241421 is about 493.5729685052.

Adding to 120241421 its reverse (124142021), we get a palindrome (244383442).

The spelling of 120241421 in words is "one hundred twenty million, two hundred forty-one thousand, four hundred twenty-one".