121434423 has 8 divisors (see below), whose sum is σ = 176631936. Its totient is φ = 73596600.

The previous prime is 121434419. The next prime is 121434437. The reversal of 121434423 is 324434121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121434423 - 2² = 121434419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121434393 and 121434402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121434403) 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 7 ways as a sum of consecutive naturals, for example, 1839883 + ... + 1839948.

It is an arithmetic number, because the mean of its divisors is an integer number (22078992).

Almost surely, 2^121434423 is an apocalyptic number.

121434423 is a deficient number, since it is larger than the sum of its proper divisors (55197513).

121434423 is a wasteful number, since it uses less digits than its factorization.

121434423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679845.

The product of its digits is 2304, while the sum is 24.

The square root of 121434423 is about 11019.7288079154. The cubic root of 121434423 is about 495.1999641034.

Adding to 121434423 its reverse (324434121), we get a palindrome (445868544).

The spelling of 121434423 in words is "one hundred twenty-one million, four hundred thirty-four thousand, four hundred twenty-three".