1285317429 has 32 divisors (see below), whose sum is σ = 1925113344. Its totient is φ = 756060480.

The previous prime is 1285317421. The next prime is 1285317431. The reversal of 1285317429 is 9247135821.

It is not a de Polignac number, because 1285317429 - 2³ = 1285317421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285317421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228519 + ... + 234075.

It is an arithmetic number, because the mean of its divisors is an integer number (60159792).

Almost surely, 2^1285317429 is an apocalyptic number.

It is an amenable number.

1285317429 is a deficient number, since it is larger than the sum of its proper divisors (639795915).

1285317429 is a wasteful number, since it uses less digits than its factorization.

1285317429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777.

The product of its digits is 120960, while the sum is 42.

The square root of 1285317429 is about 35851.3239504485. The cubic root of 1285317429 is about 1087.2684822522.

The spelling of 1285317429 in words is "one billion, two hundred eighty-five million, three hundred seventeen thousand, four hundred twenty-nine".