131127742 has 4 divisors (see below), whose sum is σ = 196691616. Its totient is φ = 65563870.

The previous prime is 131127739. The next prime is 131127743. The reversal of 131127742 is 247721131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 131127742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131127743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32781934 + ... + 32781937.

It is an arithmetic number, because the mean of its divisors is an integer number (49172904).

Almost surely, 2^131127742 is an apocalyptic number.

131127742 is a deficient number, since it is larger than the sum of its proper divisors (65563874).

131127742 is an equidigital number, since it uses as much as digits as its factorization.

131127742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65563873.

The product of its digits is 2352, while the sum is 28.

The square root of 131127742 is about 11451.1022176907. The cubic root of 131127742 is about 508.0403356279.

Adding to 131127742 its reverse (247721131), we get a palindrome (378848873).

The spelling of 131127742 in words is "one hundred thirty-one million, one hundred twenty-seven thousand, seven hundred forty-two".