823454642 has 16 divisors (see below), whose sum is σ = 1308811200. Its totient is φ = 387471600.

The previous prime is 823454633. The next prime is 823454659. The reversal of 823454642 is 246454328.

It is a happy number.

823454642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 823454596 and 823454605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66017 + ... + 77492.

It is an arithmetic number, because the mean of its divisors is an integer number (81800700).

Almost surely, 2^823454642 is an apocalyptic number.

823454642 is a deficient number, since it is larger than the sum of its proper divisors (485356558).

823454642 is a wasteful number, since it uses less digits than its factorization.

823454642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143681.

The product of its digits is 184320, while the sum is 38.

The square root of 823454642 is about 28695.8993934674. The cubic root of 823454642 is about 937.3027560626.

The spelling of 823454642 in words is "eight hundred twenty-three million, four hundred fifty-four thousand, six hundred forty-two".