811869342 has 16 divisors (see below), whose sum is σ = 1631436672. Its totient is φ = 269340120.

The previous prime is 811869337. The next prime is 811869343. The reversal of 811869342 is 243968118.

It is a junction number, because it is equal to n+sod(n) for n = 811869294 and 811869303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811869343) 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, 319378 + ... + 321909.

It is an arithmetic number, because the mean of its divisors is an integer number (101964792).

Almost surely, 2^811869342 is an apocalyptic number.

811869342 is an abundant number, since it is smaller than the sum of its proper divisors (819567330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811869342 is a wasteful number, since it uses less digits than its factorization.

811869342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641503.

The product of its digits is 82944, while the sum is 42.

The square root of 811869342 is about 28493.3210068605. The cubic root of 811869342 is about 932.8862971713.

The spelling of 811869342 in words is "eight hundred eleven million, eight hundred sixty-nine thousand, three hundred forty-two".