121851006 has 8 divisors (see below), whose sum is σ = 243702024. Its totient is φ = 40617000.

The previous prime is 121850969. The next prime is 121851013. The reversal of 121851006 is 600158121.

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

121851006 is an admirable number.

It is a super-3 number, since 3×121851006³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 10154245 + ... + 10154256.

It is an arithmetic number, because the mean of its divisors is an integer number (30462753).

Almost surely, 2^121851006 is an apocalyptic number.

121851006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121851006 is a wasteful number, since it uses less digits than its factorization.

121851006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20308506.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 121851006 is about 11038.6143152119. The cubic root of 121851006 is about 495.7655819738.

The spelling of 121851006 in words is "one hundred twenty-one million, eight hundred fifty-one thousand, six".