121420441 has 4 divisors (see below), whose sum is σ = 122534500. Its totient is φ = 120306384.

The previous prime is 121420391. The next prime is 121420501. The reversal of 121420441 is 144024121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103612041 + 17808400 = 10179^2 + 4220^2 .

It is a cyclic number.

It is not a de Polignac number, because 121420441 - 2⁹ = 121419929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121424441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556866 + ... + 557083.

It is an arithmetic number, because the mean of its divisors is an integer number (30633625).

Almost surely, 2^121420441 is an apocalyptic number.

It is an amenable number.

121420441 is a deficient number, since it is larger than the sum of its proper divisors (1114059).

121420441 is a wasteful number, since it uses less digits than its factorization.

121420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114058.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 121420441 is about 11019.0943820261. The cubic root of 121420441 is about 495.1809575442.

Adding to 121420441 its reverse (144024121), we get a palindrome (265444562).

The spelling of 121420441 in words is "one hundred twenty-one million, four hundred twenty thousand, four hundred forty-one".