819124042 has 8 divisors (see below), whose sum is σ = 1340384832. Its totient is φ = 372329100.

The previous prime is 819124027. The next prime is 819124051. The reversal of 819124042 is 240421918.

819124042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 819123995 and 819124013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18616434 + ... + 18616477.

It is an arithmetic number, because the mean of its divisors is an integer number (167548104).

Almost surely, 2^819124042 is an apocalyptic number.

819124042 is a deficient number, since it is larger than the sum of its proper divisors (521260790).

819124042 is a wasteful number, since it uses less digits than its factorization.

819124042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37232924.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 819124042 is about 28620.3431495851. The cubic root of 819124042 is about 935.6567557328.

The spelling of 819124042 in words is "eight hundred nineteen million, one hundred twenty-four thousand, forty-two".