1285129094 has 8 divisors (see below), whose sum is σ = 2011506480. Its totient is φ = 614626936.

The previous prime is 1285129081. The next prime is 1285129121. The reversal of 1285129094 is 4909215821.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13968749 + ... + 13968840.

It is an arithmetic number, because the mean of its divisors is an integer number (251438310).

Almost surely, 2^1285129094 is an apocalyptic number.

1285129094 is a deficient number, since it is larger than the sum of its proper divisors (726377386).

1285129094 is a wasteful number, since it uses less digits than its factorization.

1285129094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27937614.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1285129094 is about 35848.6972427172. The cubic root of 1285129094 is about 1087.2153745640.

The spelling of 1285129094 in words is "one billion, two hundred eighty-five million, one hundred twenty-nine thousand, ninety-four".