2124044129 has 4 divisors (see below), whose sum is σ = 2197287060. Its totient is φ = 2050801200.

The previous prime is 2124044113. The next prime is 2124044147. The reversal of 2124044129 is 9214404212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 467554129 + 1656490000 = 21623^2 + 40700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124044129 - 2⁴ = 2124044113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 73242901 = 2124044129 / (2 + 1 + 2 + 4 + 0 + 4 + 4 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124044149) 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, 36621422 + ... + 36621479.

It is an arithmetic number, because the mean of its divisors is an integer number (549321765).

Almost surely, 2^2124044129 is an apocalyptic number.

2124044129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2124044129 is a deficient number, since it is larger than the sum of its proper divisors (73242931).

2124044129 is an equidigital number, since it uses as much as digits as its factorization.

2124044129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73242930.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2124044129 is about 46087.3532435960. The cubic root of 2124044129 is about 1285.4479967312.

The spelling of 2124044129 in words is "two billion, one hundred twenty-four million, forty-four thousand, one hundred twenty-nine".