121278088 has 8 divisors (see below), whose sum is σ = 227396430. Its totient is φ = 60639040.

The previous prime is 121278077. The next prime is 121278089. The reversal of 121278088 is 880872121.

It can be written as a sum of positive squares in only one way, i.e., 116251524 + 5026564 = 10782^2 + 2242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121278089) by changing a digit.

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 as a sum of consecutive naturals, namely, 7579873 + ... + 7579888.

Almost surely, 2^121278088 is an apocalyptic number.

121278088 is the 5887-th centered heptagonal number.

It is an amenable number.

121278088 is a deficient number, since it is larger than the sum of its proper divisors (106118342).

121278088 is a wasteful number, since it uses less digits than its factorization.

121278088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159767 (or 15159763 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 121278088 is about 11012.6331092977. The cubic root of 121278088 is about 494.9873655926.

The spelling of 121278088 in words is "one hundred twenty-one million, two hundred seventy-eight thousand, eighty-eight".