126531722 has 4 divisors (see below), whose sum is σ = 189797586. Its totient is φ = 63265860.

The previous prime is 126531719. The next prime is 126531733. The reversal of 126531722 is 227135621.

It is a happy number.

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., 78659161 + 47872561 = 8869^2 + 6919^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31632929 + ... + 31632932.

Almost surely, 2^126531722 is an apocalyptic number.

126531722 is a deficient number, since it is larger than the sum of its proper divisors (63265864).

126531722 is an equidigital number, since it uses as much as digits as its factorization.

126531722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63265863.

The product of its digits is 5040, while the sum is 29.

The square root of 126531722 is about 11248.6320057152. The cubic root of 126531722 is about 502.0340103834.

The spelling of 126531722 in words is "one hundred twenty-six million, five hundred thirty-one thousand, seven hundred twenty-two".