814128442 has 16 divisors (see below), whose sum is σ = 1245313440. Its totient is φ = 399037392.

The previous prime is 814128437. The next prime is 814128449. The reversal of 814128442 is 244821418.

It is a junction number, because it is equal to n+sod(n) for n = 814128398 and 814128407.

It is not an unprimeable number, because it can be changed into a prime (814128449) 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, 154609 + ... + 159787.

It is an arithmetic number, because the mean of its divisors is an integer number (77832090).

Almost surely, 2^814128442 is an apocalyptic number.

814128442 is a deficient number, since it is larger than the sum of its proper divisors (431184998).

814128442 is a wasteful number, since it uses less digits than its factorization.

814128442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its digits is 16384, while the sum is 34.

The square root of 814128442 is about 28532.9360914716. The cubic root of 814128442 is about 933.7507760502.

The spelling of 814128442 in words is "eight hundred fourteen million, one hundred twenty-eight thousand, four hundred forty-two".