1428743 has 8 divisors (see below), whose sum is σ = 1556400. Its totient is φ = 1306368.

The previous prime is 1428709. The next prime is 1428751. The reversal of 1428743 is 3478241.

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 1428743 - 2¹⁶ = 1363207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428703) 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, 746 + ... + 1847.

It is an arithmetic number, because the mean of its divisors is an integer number (194550).

2^1428743 is an apocalyptic number.

1428743 is a deficient number, since it is larger than the sum of its proper divisors (127657).

1428743 is a wasteful number, since it uses less digits than its factorization.

1428743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641.

The product of its digits is 5376, while the sum is 29.

The square root of 1428743 is about 1195.3003806575. The cubic root of 1428743 is about 112.6292966096.

The spelling of 1428743 in words is "one million, four hundred twenty-eight thousand, seven hundred forty-three".