121587125 has 16 divisors (see below), whose sum is σ = 165537216. Its totient is φ = 88426000.

The previous prime is 121587113. The next prime is 121587127. The reversal of 121587125 is 521785121.

It is not a de Polignac number, because 121587125 - 2¹² = 121583029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121587091 and 121587100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121587127) 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 15 ways as a sum of consecutive naturals, for example, 42839 + ... + 45588.

It is an arithmetic number, because the mean of its divisors is an integer number (10346076).

Almost surely, 2^121587125 is an apocalyptic number.

It is an amenable number.

121587125 is a deficient number, since it is larger than the sum of its proper divisors (43950091).

121587125 is an equidigital number, since it uses as much as digits as its factorization.

121587125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88453 (or 88443 counting only the distinct ones).

The product of its digits is 5600, while the sum is 32.

The square root of 121587125 is about 11026.6552045487. The cubic root of 121587125 is about 495.4074460485.

The spelling of 121587125 in words is "one hundred twenty-one million, five hundred eighty-seven thousand, one hundred twenty-five".