121026587 has 8 divisors (see below), whose sum is σ = 139795632. Its totient is φ = 103552000.

The previous prime is 121026571. The next prime is 121026601. The reversal of 121026587 is 785620121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121026587 - 2⁴ = 121026571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121026517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323414 + ... + 323787.

It is an arithmetic number, because the mean of its divisors is an integer number (17474454).

Almost surely, 2^121026587 is an apocalyptic number.

121026587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121026587 is a deficient number, since it is larger than the sum of its proper divisors (18769045).

121026587 is a wasteful number, since it uses less digits than its factorization.

121026587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647229.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 121026587 is about 11001.2084336222. The cubic root of 121026587 is about 494.6449680154.

The spelling of 121026587 in words is "one hundred twenty-one million, twenty-six thousand, five hundred eighty-seven".