1143778 has 8 divisors (see below), whose sum is σ = 1721772. Its totient is φ = 569856.

The previous prime is 1143763. The next prime is 1143799. The reversal of 1143778 is 8773411.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 34969 = 1053^2 + 187^2 .

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

It is a super-2 number, since 2×1143778² = 2616456226568, which contains 22 as substring.

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, 175 + ... + 1522.

2^1143778 is an apocalyptic number.

1143778 is a deficient number, since it is larger than the sum of its proper divisors (577994).

1143778 is a wasteful number, since it uses less digits than its factorization.

1143778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036.

The product of its digits is 4704, while the sum is 31.

The square root of 1143778 is about 1069.4755724186. The cubic root of 1143778 is about 104.5796649913.

The spelling of 1143778 in words is "one million, one hundred forty-three thousand, seven hundred seventy-eight".