121404159723 has 96 divisors (see below), whose sum is σ = 214769336320. Its totient is φ = 59545886400.

The previous prime is 121404159689. The next prime is 121404159739. The reversal of 121404159723 is 327951404121.

It is not a de Polignac number, because 121404159723 - 2¹⁰ = 121404158699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121404159323) by changing a digit.

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 in 95 ways as a sum of consecutive naturals, for example, 14817558 + ... + 14825748.

Almost surely, 2^121404159723 is an apocalyptic number.

121404159723 is a deficient number, since it is larger than the sum of its proper divisors (93365176597).

121404159723 is a wasteful number, since it uses less digits than its factorization.

121404159723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8549 (or 8538 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 121404159723 in words is "one hundred twenty-one billion, four hundred four million, one hundred fifty-nine thousand, seven hundred twenty-three".