131678042 has 16 divisors (see below), whose sum is σ = 203186760. Its totient is φ = 63955008.

The previous prime is 131678033. The next prime is 131678047. The reversal of 131678042 is 240876131.

It can be written as a sum of positive squares in 4 ways, for example, as 114297481 + 17380561 = 10691^2 + 4169^2 .

It is not an unprimeable number, because it can be changed into a prime (131678047) 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, 63884 + ... + 65912.

Almost surely, 2^131678042 is an apocalyptic number.

131678042 is a deficient number, since it is larger than the sum of its proper divisors (71508718).

131678042 is a wasteful number, since it uses less digits than its factorization.

131678042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 131678042 is about 11475.1053154209. The cubic root of 131678042 is about 508.7500364828.

The spelling of 131678042 in words is "one hundred thirty-one million, six hundred seventy-eight thousand, forty-two".