121610423 has 4 divisors (see below), whose sum is σ = 132665928. Its totient is φ = 110554920.

The previous prime is 121610413. The next prime is 121610443. The reversal of 121610423 is 324016121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121610423 - 2²² = 117416119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121610395 and 121610404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121610413) 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 3 ways as a sum of consecutive naturals, for example, 5527736 + ... + 5527757.

It is an arithmetic number, because the mean of its divisors is an integer number (33166482).

Almost surely, 2^121610423 is an apocalyptic number.

121610423 is a deficient number, since it is larger than the sum of its proper divisors (11055505).

121610423 is a wasteful number, since it uses less digits than its factorization.

121610423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11055504.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 121610423 is about 11027.7115939800. The cubic root of 121610423 is about 495.4390866397.

Adding to 121610423 its reverse (324016121), we get a palindrome (445626544).

The spelling of 121610423 in words is "one hundred twenty-one million, six hundred ten thousand, four hundred twenty-three".