1286642134 has 8 divisors (see below), whose sum is σ = 1961602128. Its totient is φ = 632774760.

The previous prime is 1286642099. The next prime is 1286642153. The reversal of 1286642134 is 4312466821.

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

It is a junction number, because it is equal to n+sod(n) for n = 1286642093 and 1286642102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5273002 + ... + 5273245.

It is an arithmetic number, because the mean of its divisors is an integer number (245200266).

Almost surely, 2^1286642134 is an apocalyptic number.

1286642134 is a deficient number, since it is larger than the sum of its proper divisors (674959994).

1286642134 is a wasteful number, since it uses less digits than its factorization.

1286642134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546310.

The product of its digits is 55296, while the sum is 37.

The square root of 1286642134 is about 35869.7941728134. The cubic root of 1286642134 is about 1087.6418829987.

The spelling of 1286642134 in words is "one billion, two hundred eighty-six million, six hundred forty-two thousand, one hundred thirty-four".