812790142 has 8 divisors (see below), whose sum is σ = 1221163056. Its totient is φ = 405735792.

The previous prime is 812790101. The next prime is 812790149. The reversal of 812790142 is 241097218.

812790142 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 = 812790098 and 812790107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812790149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328098 + ... + 330565.

It is an arithmetic number, because the mean of its divisors is an integer number (152645382).

Almost surely, 2^812790142 is an apocalyptic number.

812790142 is a deficient number, since it is larger than the sum of its proper divisors (408372914).

812790142 is a wasteful number, since it uses less digits than its factorization.

812790142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659282.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 812790142 is about 28509.4746005604. The cubic root of 812790142 is about 933.2388486269.

The spelling of 812790142 in words is "eight hundred twelve million, seven hundred ninety thousand, one hundred forty-two".