121453280 has 48 divisors (see below), whose sum is σ = 309010464. Its totient is φ = 44843520.

The previous prime is 121453279. The next prime is 121453289. The reversal of 121453280 is 82354121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121453289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27116 + ... + 31275.

It is an arithmetic number, because the mean of its divisors is an integer number (6437718).

Almost surely, 2^121453280 is an apocalyptic number.

121453280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121453280 is an abundant number, since it is smaller than the sum of its proper divisors (187557184).

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

121453280 is a wasteful number, since it uses less digits than its factorization.

121453280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58419 (or 58411 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 121453280 is about 11020.5843765201. The cubic root of 121453280 is about 495.2255952278.

The spelling of 121453280 in words is "one hundred twenty-one million, four hundred fifty-three thousand, two hundred eighty".