121441420 has 24 divisors (see below), whose sum is σ = 260455104. Its totient is φ = 47542656.

The previous prime is 121441409. The next prime is 121441433. The reversal of 121441420 is 24144121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63657 + ... + 65536.

It is an arithmetic number, because the mean of its divisors is an integer number (10852296).

Almost surely, 2^121441420 is an apocalyptic number.

121441420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121441420 is an abundant number, since it is smaller than the sum of its proper divisors (139013684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121441420 is a wasteful number, since it uses less digits than its factorization.

121441420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129249 (or 129247 counting only the distinct ones).

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

The square root of 121441420 is about 11020.0462793947. The cubic root of 121441420 is about 495.2094749915.

Adding to 121441420 its reverse (24144121), we get a palindrome (145585541).

The spelling of 121441420 in words is "one hundred twenty-one million, four hundred forty-one thousand, four hundred twenty".