131742756 has 36 divisors (see below), whose sum is σ = 333405072. Its totient is φ = 43863024.

The previous prime is 131742731. The next prime is 131742757. The reversal of 131742756 is 657247131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 131742756.

It is not an unprimeable number, because it can be changed into a prime (131742757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41191 + ... + 44273.

It is an arithmetic number, because the mean of its divisors is an integer number (9261252).

Almost surely, 2^131742756 is an apocalyptic number.

It is an amenable number.

131742756 is an abundant number, since it is smaller than the sum of its proper divisors (201662316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131742756 is a wasteful number, since it uses less digits than its factorization.

131742756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280 (or 4275 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 131742756 is about 11477.9247253151. The cubic root of 131742756 is about 508.8333656326.

Adding to 131742756 its reverse (657247131), we get a palindrome (788989887).

The spelling of 131742756 in words is "one hundred thirty-one million, seven hundred forty-two thousand, seven hundred fifty-six".