1385143 has 8 divisors (see below), whose sum is σ = 1492560. Its totient is φ = 1280640.

The previous prime is 1385117. The next prime is 1385147. The reversal of 1385143 is 3415831.

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 1385143 - 2⁹ = 1384631 is a prime.

It is a super-2 number, since 2×1385143² = 3837242260898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 313 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (186570).

2^1385143 is an apocalyptic number.

1385143 is a deficient number, since it is larger than the sum of its proper divisors (107417).

1385143 is a wasteful number, since it uses less digits than its factorization.

1385143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457.

The product of its digits is 1440, while the sum is 25.

The square root of 1385143 is about 1176.9209829041. The cubic root of 1385143 is about 111.4717631783.

The spelling of 1385143 in words is "one million, three hundred eighty-five thousand, one hundred forty-three".