131742736 has 40 divisors (see below), whose sum is σ = 261405144. Its totient is φ = 64296960.

The previous prime is 131742731. The next prime is 131742757. The reversal of 131742736 is 637247131.

It can be written as a sum of positive squares in 4 ways, for example, as 11182336 + 120560400 = 3344^2 + 10980^2 .

It is a super-2 number, since 2×131742736² = 34712296977531392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (131742731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285546 + ... + 286006.

Almost surely, 2^131742736 is an apocalyptic number.

131742736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131742736 is a deficient number, since it is larger than the sum of its proper divisors (129662408).

131742736 is a wasteful number, since it uses less digits than its factorization.

131742736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 853 counting only the distinct ones).

The product of its digits is 21168, while the sum is 34.

The square root of 131742736 is about 11477.9238540774. The cubic root of 131742736 is about 508.8333398838.

Adding to 131742736 its reverse (637247131), we get a palindrome (768989867).

The spelling of 131742736 in words is "one hundred thirty-one million, seven hundred forty-two thousand, seven hundred thirty-six".