126722132 has 12 divisors (see below), whose sum is σ = 225399636. Its totient is φ = 62322240.

The previous prime is 126722129. The next prime is 126722137. The reversal of 126722132 is 231227621.

It can be written as a sum of positive squares in 2 ways, for example, as 22600516 + 104121616 = 4754^2 + 10204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126722137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259433 + ... + 259920.

It is an arithmetic number, because the mean of its divisors is an integer number (18783303).

Almost surely, 2^126722132 is an apocalyptic number.

It is an amenable number.

126722132 is a deficient number, since it is larger than the sum of its proper divisors (98677504).

126722132 is a wasteful number, since it uses less digits than its factorization.

126722132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519418 (or 519416 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 126722132 is about 11257.0925198294. The cubic root of 126722132 is about 502.2857111271.

Adding to 126722132 its reverse (231227621), we get a palindrome (357949753).

The spelling of 126722132 in words is "one hundred twenty-six million, seven hundred twenty-two thousand, one hundred thirty-two".