1428696143 has 16 divisors (see below), whose sum is σ = 1675805760. Its totient is φ = 1192678656.

The previous prime is 1428696121. The next prime is 1428696173. The reversal of 1428696143 is 3416968241.

It is a cyclic number.

It is not a de Polignac number, because 1428696143 - 2⁶ = 1428696079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1428696094 and 1428696103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428696173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36773 + ... + 64881.

It is an arithmetic number, because the mean of its divisors is an integer number (104737860).

Almost surely, 2^1428696143 is an apocalyptic number.

1428696143 is a deficient number, since it is larger than the sum of its proper divisors (247109617).

1428696143 is a wasteful number, since it uses less digits than its factorization.

1428696143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28306.

The product of its digits is 248832, while the sum is 44.

The square root of 1428696143 is about 37798.0970817315. The cubic root of 1428696143 is about 1126.2806533408.

The spelling of 1428696143 in words is "one billion, four hundred twenty-eight million, six hundred ninety-six thousand, one hundred forty-three".