121370780 has 24 divisors (see below), whose sum is σ = 256572960. Its totient is φ = 48225600.

The previous prime is 121370773. The next prime is 121370789. The reversal of 121370780 is 87073121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121370789) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17075 + ... + 23114.

It is an arithmetic number, because the mean of its divisors is an integer number (10690540).

Almost surely, 2^121370780 is an apocalyptic number.

121370780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121370780 is an abundant number, since it is smaller than the sum of its proper divisors (135202180).

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

121370780 is a wasteful number, since it uses less digits than its factorization.

121370780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349 (or 40347 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 121370780 is about 11016.8407449686. The cubic root of 121370780 is about 495.1134386139.

The spelling of 121370780 in words is "one hundred twenty-one million, three hundred seventy thousand, seven hundred eighty".