131335042 has 4 divisors (see below), whose sum is σ = 197002566. Its totient is φ = 65667520.

The previous prime is 131335027. The next prime is 131335067. The reversal of 131335042 is 240533131.

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

It can be written as a sum of positive squares in only one way, i.e., 79192201 + 52142841 = 8899^2 + 7221^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32833759 + ... + 32833762.

Almost surely, 2^131335042 is an apocalyptic number.

131335042 is a deficient number, since it is larger than the sum of its proper divisors (65667524).

131335042 is an equidigital number, since it uses as much as digits as its factorization.

131335042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65667523.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 131335042 is about 11460.1501735361. The cubic root of 131335042 is about 508.3079151912.

Adding to 131335042 its reverse (240533131), we get a palindrome (371868173).

The spelling of 131335042 in words is "one hundred thirty-one million, three hundred thirty-five thousand, forty-two".