1278955 has 8 divisors (see below), whose sum is σ = 1544400. Its totient is φ = 1016736.

The previous prime is 1278911. The next prime is 1278983. The reversal of 1278955 is 5598721.

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

It is a cyclic number.

It is not a de Polignac number, because 1278955 - 2¹⁵ = 1246187 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁴ + 7⁷ + 8⁵ + 9 + 5⁶ + 5⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (193050).

2^1278955 is an apocalyptic number.

1278955 is a deficient number, since it is larger than the sum of its proper divisors (265445).

1278955 is a wasteful number, since it uses less digits than its factorization.

1278955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its digits is 25200, while the sum is 37.

The square root of 1278955 is about 1130.9089264835. The cubic root of 1278955 is about 108.5471490524.

The spelling of 1278955 in words is "one million, two hundred seventy-eight thousand, nine hundred fifty-five".