1284671042 has 8 divisors (see below), whose sum is σ = 1927970832. Its totient is φ = 642014100.

The previous prime is 1284671021. The next prime is 1284671051. The reversal of 1284671042 is 2401764821.

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 = 1284670993 and 1284671011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155684 + ... + 163727.

It is an arithmetic number, because the mean of its divisors is an integer number (240996354).

Almost surely, 2^1284671042 is an apocalyptic number.

1284671042 is a deficient number, since it is larger than the sum of its proper divisors (643299790).

1284671042 is a wasteful number, since it uses less digits than its factorization.

1284671042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321424.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1284671042 is about 35842.3079893023. The cubic root of 1284671042 is about 1087.0861890066.

The spelling of 1284671042 in words is "one billion, two hundred eighty-four million, six hundred seventy-one thousand, forty-two".