131546042 has 4 divisors (see below), whose sum is σ = 197319066. Its totient is φ = 65773020.

The previous prime is 131546033. The next prime is 131546047. The reversal of 131546042 is 240645131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240645131 = 443 ⋅543217.

It can be written as a sum of positive squares in only one way, i.e., 124791241 + 6754801 = 11171^2 + 2599^2 .

It is a super-2 number, since 2×131546042² = 34608722331731528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131546047) by changing a digit.

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 as a sum of consecutive naturals, namely, 32886509 + ... + 32886512.

Almost surely, 2^131546042 is an apocalyptic number.

131546042 is a deficient number, since it is larger than the sum of its proper divisors (65773024).

131546042 is an equidigital number, since it uses as much as digits as its factorization.

131546042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65773023.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 131546042 is about 11469.3522920869. The cubic root of 131546042 is about 508.5799816631.

The spelling of 131546042 in words is "one hundred thirty-one million, five hundred forty-six thousand, forty-two".