1428672143 has 8 divisors (see below), whose sum is σ = 1437012000. Its totient is φ = 1420344288.

The previous prime is 1428672067. The next prime is 1428672151. The reversal of 1428672143 is 3412768241.

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 1428672143 - 2¹⁰ = 1428671119 is a prime.

It is a super-2 number, since 2×1428672143² = 4082208184368424898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1428672097 and 1428672106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428672043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354005 + ... + 358017.

It is an arithmetic number, because the mean of its divisors is an integer number (179626500).

Almost surely, 2^1428672143 is an apocalyptic number.

1428672143 is a deficient number, since it is larger than the sum of its proper divisors (8339857).

1428672143 is a wasteful number, since it uses less digits than its factorization.

1428672143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its digits is 64512, while the sum is 38.

The square root of 1428672143 is about 37797.7796040984. The cubic root of 1428672143 is about 1126.2743466844.

The spelling of 1428672143 in words is "one billion, four hundred twenty-eight million, six hundred seventy-two thousand, one hundred forty-three".