121850478 has 12 divisors (see below), whose sum is σ = 264009408. Its totient is φ = 40616820.

The previous prime is 121850473. The next prime is 121850497. The reversal of 121850478 is 874058121.

121850478 is a `hidden beast` number, since 1 + 2 + 185 + 0 + 478 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121850471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3384718 + ... + 3384753.

It is an arithmetic number, because the mean of its divisors is an integer number (22000784).

Almost surely, 2^121850478 is an apocalyptic number.

121850478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121850478 is an abundant number, since it is smaller than the sum of its proper divisors (142158930).

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

121850478 is a wasteful number, since it uses less digits than its factorization.

121850478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769479 (or 6769476 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 121850478 is about 11038.5903991406. The cubic root of 121850478 is about 495.7648658954.

The spelling of 121850478 in words is "one hundred twenty-one million, eight hundred fifty thousand, four hundred seventy-eight".