121304440 has 16 divisors (see below), whose sum is σ = 272935080. Its totient is φ = 48521760.

The previous prime is 121304429. The next prime is 121304453. The reversal of 121304440 is 44403121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516266 + ... + 1516345.

Almost surely, 2^121304440 is an apocalyptic number.

121304440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121304440 is an abundant number, since it is smaller than the sum of its proper divisors (151630640).

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

121304440 is a wasteful number, since it uses less digits than its factorization.

121304440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032622 (or 3032618 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121304440 is about 11013.8294884205. The cubic root of 121304440 is about 495.0232142295.

Adding to 121304440 its reverse (44403121), we get a palindrome (165707561).

The spelling of 121304440 in words is "one hundred twenty-one million, three hundred four thousand, four hundred forty".