812225842 has 8 divisors (see below), whose sum is σ = 1218460032. Its totient is φ = 406072500.

The previous prime is 812225809. The next prime is 812225857. The reversal of 812225842 is 248522218.

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 = 812225798 and 812225807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26467 + ... + 48217.

It is an arithmetic number, because the mean of its divisors is an integer number (152307504).

Almost surely, 2^812225842 is an apocalyptic number.

812225842 is a deficient number, since it is larger than the sum of its proper divisors (406234190).

812225842 is a wasteful number, since it uses less digits than its factorization.

812225842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40424.

The product of its digits is 20480, while the sum is 34.

The square root of 812225842 is about 28499.5761722872. The cubic root of 812225842 is about 933.0228237776.

The spelling of 812225842 in words is "eight hundred twelve million, two hundred twenty-five thousand, eight hundred forty-two".