1428894123 has 8 divisors (see below), whose sum is σ = 1906198848. Its totient is φ = 952092744.

The previous prime is 1428894121. The next prime is 1428894133. The reversal of 1428894123 is 3214988241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428894123 - 2¹ = 1428894121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428894121) 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, 119161 + ... + 130602.

It is an arithmetic number, because the mean of its divisors is an integer number (238274856).

Almost surely, 2^1428894123 is an apocalyptic number.

1428894123 is a deficient number, since it is larger than the sum of its proper divisors (477304725).

1428894123 is a wasteful number, since it uses less digits than its factorization.

1428894123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251673.

The product of its digits is 110592, while the sum is 42.

The square root of 1428894123 is about 37800.7159059190. The cubic root of 1428894123 is about 1126.3326753064.

The spelling of 1428894123 in words is "one billion, four hundred twenty-eight million, eight hundred ninety-four thousand, one hundred twenty-three".