121287375 has 112 divisors (see below), whose sum is σ = 249623712. Its totient is φ = 58806000.

The previous prime is 121287329. The next prime is 121287377. The reversal of 121287375 is 573782121.

The cubic root of 121287375 is 495.

It is a perfect power (a cube), and thus also a powerful number.

121287375 is a `hidden beast` number, since 1 + 2 + 1 + 287 + 375 = 666.

It is not a de Polignac number, because 121287375 - 2¹⁰ = 121286351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121287377) 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 111 ways as a sum of consecutive naturals, for example, 11026120 + ... + 11026130.

Almost surely, 2^121287375 is an apocalyptic number.

121287375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121287375 is an abundant number, since it is smaller than the sum of its proper divisors (128336337).

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

121287375 is an frugal number, since it uses more digits than its factorization.

121287375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 19 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 121287375 is about 11013.0547533371.

It can be divided in two parts, 12128 and 7375, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 121287375 in words is "one hundred twenty-one million, two hundred eighty-seven thousand, three hundred seventy-five".