1244405129 has 8 divisors (see below), whose sum is σ = 1359806400. Its totient is φ = 1129382800.

The previous prime is 1244405111. The next prime is 1244405153. The reversal of 1244405129 is 9215044421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244405129 - 2¹² = 1244401033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244405095 and 1244405104.

It is not an unprimeable number, because it can be changed into a prime (1244405329) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 87842 + ... + 101019.

It is an arithmetic number, because the mean of its divisors is an integer number (169975800).

Almost surely, 2^1244405129 is an apocalyptic number.

It is an amenable number.

1244405129 is a deficient number, since it is larger than the sum of its proper divisors (115401271).

1244405129 is a wasteful number, since it uses less digits than its factorization.

1244405129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189471.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1244405129 is about 35276.1268990801. The cubic root of 1244405129 is about 1075.6077699689.

The spelling of 1244405129 in words is "one billion, two hundred forty-four million, four hundred five thousand, one hundred twenty-nine".