131784842 has 16 divisors (see below), whose sum is σ = 226281600. Its totient is φ = 56388048.

The previous prime is 131784803. The next prime is 131784847. The reversal of 131784842 is 248487131.

It is a junction number, because it is equal to n+sod(n) for n = 131784796 and 131784805.

It is not an unprimeable number, because it can be changed into a prime (131784847) 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, 1784 + ... + 16332.

It is an arithmetic number, because the mean of its divisors is an integer number (14142600).

Almost surely, 2^131784842 is an apocalyptic number.

131784842 is a deficient number, since it is larger than the sum of its proper divisors (94496758).

131784842 is a wasteful number, since it uses less digits than its factorization.

131784842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15205.

The product of its digits is 43008, while the sum is 38.

The square root of 131784842 is about 11479.7579242770. The cubic root of 131784842 is about 508.8875431366.

The spelling of 131784842 in words is "one hundred thirty-one million, seven hundred eighty-four thousand, eight hundred forty-two".