121179280 has 20 divisors (see below), whose sum is σ = 281742012. Its totient is φ = 48471680.

The previous prime is 121179277. The next prime is 121179299. The reversal of 121179280 is 82971121.

It can be written as a sum of positive squares in 2 ways, for example, as 50013184 + 71166096 = 7072^2 + 8436^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757291 + ... + 757450.

Almost surely, 2^121179280 is an apocalyptic number.

121179280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121179280 is an abundant number, since it is smaller than the sum of its proper divisors (160562732).

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

121179280 is a wasteful number, since it uses less digits than its factorization.

121179280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514754 (or 1514748 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 121179280 is about 11008.1460746122. The cubic root of 121179280 is about 494.8529032705.

The spelling of 121179280 in words is "one hundred twenty-one million, one hundred seventy-nine thousand, two hundred eighty".