121432487 has 16 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 104800800.

The previous prime is 121432469. The next prime is 121432543. The reversal of 121432487 is 784234121.

It is a cyclic number.

It is not a de Polignac number, because 121432487 - 2¹⁶ = 121366951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121432687) 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, 14714 + ... + 21432.

It is an arithmetic number, because the mean of its divisors is an integer number (8709120).

Almost surely, 2^121432487 is an apocalyptic number.

121432487 is a deficient number, since it is larger than the sum of its proper divisors (17913433).

121432487 is a wasteful number, since it uses less digits than its factorization.

121432487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814.

The product of its digits is 10752, while the sum is 32.

The square root of 121432487 is about 11019.6409651132. The cubic root of 121432487 is about 495.1973324712.

The spelling of 121432487 in words is "one hundred twenty-one million, four hundred thirty-two thousand, four hundred eighty-seven".