131855842 has 8 divisors (see below), whose sum is σ = 209418156. Its totient is φ = 62049792.

The previous prime is 131855813. The next prime is 131855869. The reversal of 131855842 is 248558131.

It can be written as a sum of positive squares in 2 ways, for example, as 124121881 + 7733961 = 11141^2 + 2781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1939023 + ... + 1939090.

Almost surely, 2^131855842 is an apocalyptic number.

131855842 is a deficient number, since it is larger than the sum of its proper divisors (77562314).

131855842 is a wasteful number, since it uses less digits than its factorization.

131855842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878132.

The product of its digits is 38400, while the sum is 37.

The square root of 131855842 is about 11482.8499075796. The cubic root of 131855842 is about 508.9789156302.

The spelling of 131855842 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, eight hundred forty-two".