810015394142 has 8 divisors (see below), whose sum is σ = 1215191608632. Its totient is φ = 404951524600.

The previous prime is 810015394093. The next prime is 810015394159. The reversal of 810015394142 is 241493510018.

810015394142 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 super-2 number, since 2×810015394142² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 810015394096 and 810015394105.

It is a congruent number.

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, 28068209 + ... + 28097052.

It is an arithmetic number, because the mean of its divisors is an integer number (151898951079).

Almost surely, 2^810015394142 is an apocalyptic number.

810015394142 is a deficient number, since it is larger than the sum of its proper divisors (405176214490).

810015394142 is a wasteful number, since it uses less digits than its factorization.

810015394142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56172474.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 810015394142 in words is "eight hundred ten billion, fifteen million, three hundred ninety-four thousand, one hundred forty-two".