121559896 has 8 divisors (see below), whose sum is σ = 227924820. Its totient is φ = 60779944.

The previous prime is 121559887. The next prime is 121559917. The reversal of 121559896 is 698955121.

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 (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7597486 + ... + 7597501.

Almost surely, 2^121559896 is an apocalyptic number.

It is an amenable number.

121559896 is a deficient number, since it is larger than the sum of its proper divisors (106364924).

121559896 is a wasteful number, since it uses less digits than its factorization.

121559896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194993 (or 15194989 counting only the distinct ones).

The product of its digits is 194400, while the sum is 46.

The square root of 121559896 is about 11025.4204454978. The cubic root of 121559896 is about 495.3704617147.

The spelling of 121559896 in words is "one hundred twenty-one million, five hundred fifty-nine thousand, eight hundred ninety-six".