121285858 has 8 divisors (see below), whose sum is σ = 182445228. Its totient is φ = 60470784.

The previous prime is 121285849. The next prime is 121285867. The reversal of 121285858 is 858582121.

It is an interprime number because it is at equal distance from previous prime (121285849) and next prime (121285867).

It can be written as a sum of positive squares in 2 ways, for example, as 117874449 + 3411409 = 10857^2 + 1847^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121285858.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85191 + ... + 86602.

Almost surely, 2^121285858 is an apocalyptic number.

121285858 is a deficient number, since it is larger than the sum of its proper divisors (61159370).

121285858 is a wasteful number, since it uses less digits than its factorization.

121285858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172148.

The product of its digits is 51200, while the sum is 40.

The square root of 121285858 is about 11012.9858803142. The cubic root of 121285858 is about 494.9979362564.

The spelling of 121285858 in words is "one hundred twenty-one million, two hundred eighty-five thousand, eight hundred fifty-eight".