1129251429 has 16 divisors (see below), whose sum is σ = 1685006400. Its totient is φ = 747415728.

The previous prime is 1129251427. The next prime is 1129251467. The reversal of 1129251429 is 9241529211.

1129251429 is a `hidden beast` number, since 112 + 9 + 2 + 514 + 29 = 666.

It is not a de Polignac number, because 1129251429 - 2¹ = 1129251427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1129251393 and 1129251402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129251421) 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 15 ways as a sum of consecutive naturals, for example, 146694 + ... + 154199.

It is an arithmetic number, because the mean of its divisors is an integer number (105312900).

Almost surely, 2^1129251429 is an apocalyptic number.

It is an amenable number.

1129251429 is a deficient number, since it is larger than the sum of its proper divisors (555754971).

1129251429 is a wasteful number, since it uses less digits than its factorization.

1129251429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301041 (or 301035 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1129251429 is about 33604.3364612367. The cubic root of 1129251429 is about 1041.3503874117.

The spelling of 1129251429 in words is "one billion, one hundred twenty-nine million, two hundred fifty-one thousand, four hundred twenty-nine".