1405143 has 6 divisors (see below), whose sum is σ = 2029664. Its totient is φ = 936756.

The previous prime is 1405141. The next prime is 1405147. The reversal of 1405143 is 3415041.

It is a happy number.

It is not a de Polignac number, because 1405143 - 2¹ = 1405141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78055 + ... + 78072.

2^1405143 is an apocalyptic number.

1405143 is a deficient number, since it is larger than the sum of its proper divisors (624521).

1405143 is a wasteful number, since it uses less digits than its factorization.

1405143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156133 (or 156130 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1405143 is about 1185.3872784875. The cubic root of 1405143 is about 112.0057129314.

The spelling of 1405143 in words is "one million, four hundred five thousand, one hundred forty-three".