121194856 has 8 divisors (see below), whose sum is σ = 227240370. Its totient is φ = 60597424.

The previous prime is 121194851. The next prime is 121194859. The reversal of 121194856 is 658491121.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 46648900 = 8634^2 + 6830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121194851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7574671 + ... + 7574686.

Almost surely, 2^121194856 is an apocalyptic number.

It is an amenable number.

121194856 is a deficient number, since it is larger than the sum of its proper divisors (106045514).

121194856 is a wasteful number, since it uses less digits than its factorization.

121194856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15149363 (or 15149359 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 121194856 is about 11008.8535279565. The cubic root of 121194856 is about 494.8741046360.

The spelling of 121194856 in words is "one hundred twenty-one million, one hundred ninety-four thousand, eight hundred fifty-six".