806143942 has 4 divisors (see below), whose sum is σ = 1209215916. Its totient is φ = 403071970.

The previous prime is 806143937. The next prime is 806143957. The reversal of 806143942 is 249341608.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 201535984 + ... + 201535987.

It is an arithmetic number, because the mean of its divisors is an integer number (302303979).

Almost surely, 2^806143942 is an apocalyptic number.

806143942 is a deficient number, since it is larger than the sum of its proper divisors (403071974).

806143942 is a wasteful number, since it uses less digits than its factorization.

806143942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403071973.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 806143942 is about 28392.6740903353. The cubic root of 806143942 is about 930.6881798873.

It can be divided in two parts, 806143 and 942, that added together give a triangular number (807085 = T₁₂₇₀).

The spelling of 806143942 in words is "eight hundred six million, one hundred forty-three thousand, nine hundred forty-two".