121027429 has 2 divisors, whose sum is σ = 121027430. Its totient is φ = 121027428.

The previous prime is 121027427. The next prime is 121027433. The reversal of 121027429 is 924720121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120494529 + 532900 = 10977^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 121027429 - 2¹ = 121027427 is a prime.

Together with 121027427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121027397 and 121027406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121027427) 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 as a sum of consecutive naturals, namely, 60513714 + 60513715.

It is an arithmetic number, because the mean of its divisors is an integer number (60513715).

Almost surely, 2^121027429 is an apocalyptic number.

It is an amenable number.

121027429 is a deficient number, since it is larger than the sum of its proper divisors (1).

121027429 is an equidigital number, since it uses as much as digits as its factorization.

121027429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121027429 is about 11001.2467020788. The cubic root of 121027429 is about 494.6461151190.

The spelling of 121027429 in words is "one hundred twenty-one million, twenty-seven thousand, four hundred twenty-nine".