121444429 has 2 divisors, whose sum is σ = 121444430. Its totient is φ = 121444428.

The previous prime is 121444423. The next prime is 121444441. The reversal of 121444429 is 924444121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97970404 + 23474025 = 9898^2 + 4845^2 .

It is a cyclic number.

It is not a de Polignac number, because 121444429 - 2¹¹ = 121442381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121444429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121444423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60722214 + 60722215.

It is an arithmetic number, because the mean of its divisors is an integer number (60722215).

Almost surely, 2^121444429 is an apocalyptic number.

It is an amenable number.

121444429 is a deficient number, since it is larger than the sum of its proper divisors (1).

121444429 is an equidigital number, since it uses as much as digits as its factorization.

121444429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 121444429 is about 11020.1828024766. The cubic root of 121444429 is about 495.2135649552.

It can be divided in two parts, 12 and 1444429, that added together give a palindrome (1444441).

The spelling of 121444429 in words is "one hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-nine".