121860557 has 8 divisors (see below), whose sum is σ = 149982336. Its totient is φ = 96417072.

The previous prime is 121860553. The next prime is 121860559. The reversal of 121860557 is 755068121.

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 121860557 - 2² = 121860553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121860553) 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, 669473 + ... + 669654.

It is an arithmetic number, because the mean of its divisors is an integer number (18747792).

Almost surely, 2^121860557 is an apocalyptic number.

It is an amenable number.

121860557 is a deficient number, since it is larger than the sum of its proper divisors (28121779).

121860557 is a wasteful number, since it uses less digits than its factorization.

121860557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339147.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 121860557 is about 11039.0469244405. The cubic root of 121860557 is about 495.7785347689.

The spelling of 121860557 in words is "one hundred twenty-one million, eight hundred sixty thousand, five hundred fifty-seven".