1224434129 has 4 divisors (see below), whose sum is σ = 1296459684. Its totient is φ = 1152408576.

The previous prime is 1224434117. The next prime is 1224434131. The reversal of 1224434129 is 9214344221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9214344221 = 1399 ⋅6586379.

It can be written as a sum of positive squares in 2 ways, for example, as 703681729 + 520752400 = 26527^2 + 22820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224434129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224434095 and 1224434104.

It is not an unprimeable number, because it can be changed into a prime (1224431129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36012752 + ... + 36012785.

It is an arithmetic number, because the mean of its divisors is an integer number (324114921).

Almost surely, 2^1224434129 is an apocalyptic number.

It is an amenable number.

1224434129 is a deficient number, since it is larger than the sum of its proper divisors (72025555).

1224434129 is an equidigital number, since it uses as much as digits as its factorization.

1224434129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72025554.

The product of its digits is 13824, while the sum is 32.

The square root of 1224434129 is about 34991.9151947989. The cubic root of 1224434129 is about 1069.8227001189.

The spelling of 1224434129 in words is "one billion, two hundred twenty-four million, four hundred thirty-four thousand, one hundred twenty-nine".