823730042 has 16 divisors (see below), whose sum is σ = 1241503200. Its totient is φ = 409900848.

The previous prime is 823730041. The next prime is 823730051. The reversal of 823730042 is 240037328.

It is a junction number, because it is equal to n+sod(n) for n = 823729987 and 823730014.

It is not an unprimeable number, because it can be changed into a prime (823730041) 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, 576533 + ... + 577959.

It is an arithmetic number, because the mean of its divisors is an integer number (77593950).

Almost surely, 2^823730042 is an apocalyptic number.

823730042 is a deficient number, since it is larger than the sum of its proper divisors (417773158).

823730042 is a wasteful number, since it uses less digits than its factorization.

823730042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 823730042 is about 28700.6975873410. The cubic root of 823730042 is about 937.4072363801.

The spelling of 823730042 in words is "eight hundred twenty-three million, seven hundred thirty thousand, forty-two".