121712434 has 4 divisors (see below), whose sum is σ = 182568654. Its totient is φ = 60856216.

The previous prime is 121712411. The next prime is 121712483. The reversal of 121712434 is 434217121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434217121 = 13 ⋅33401317.

It can be written as a sum of positive squares in only one way, i.e., 118483225 + 3229209 = 10885^2 + 1797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121712399 and 121712408.

It is an unprimeable number.

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, 30428107 + ... + 30428110.

Almost surely, 2^121712434 is an apocalyptic number.

121712434 is a deficient number, since it is larger than the sum of its proper divisors (60856220).

121712434 is an equidigital number, since it uses as much as digits as its factorization.

121712434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60856219.

The product of its digits is 1344, while the sum is 25.

The square root of 121712434 is about 11032.3358360775. The cubic root of 121712434 is about 495.5775783643.

Adding to 121712434 its reverse (434217121), we get a palindrome (555929555).

The spelling of 121712434 in words is "one hundred twenty-one million, seven hundred twelve thousand, four hundred thirty-four".