1287145078 has 8 divisors (see below), whose sum is σ = 1930870440. Its totient is φ = 643521600.

The previous prime is 1287145061. The next prime is 1287145081. The reversal of 1287145078 is 8705417821.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32533 + ... + 60271.

It is an arithmetic number, because the mean of its divisors is an integer number (241358805).

Almost surely, 2^1287145078 is an apocalyptic number.

1287145078 is a deficient number, since it is larger than the sum of its proper divisors (643725362).

1287145078 is a wasteful number, since it uses less digits than its factorization.

1287145078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50942.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 1287145078 is about 35876.8041776299. The cubic root of 1287145078 is about 1087.7835830316.

The spelling of 1287145078 in words is "one billion, two hundred eighty-seven million, one hundred forty-five thousand, seventy-eight".