126688532 has 6 divisors (see below), whose sum is σ = 221704938. Its totient is φ = 63344264.

The previous prime is 126688459. The next prime is 126688543. The reversal of 126688532 is 235886621.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 45616516 = 9004^2 + 6754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 126688532.

It is a congruent number.

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, 15836063 + ... + 15836070.

It is an arithmetic number, because the mean of its divisors is an integer number (36950823).

Almost surely, 2^126688532 is an apocalyptic number.

It is an amenable number.

126688532 is a deficient number, since it is larger than the sum of its proper divisors (95016406).

126688532 is a wasteful number, since it uses less digits than its factorization.

126688532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31672137 (or 31672135 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 126688532 is about 11255.6000284303. The cubic root of 126688532 is about 502.2413140107.

It can be divided in two parts, 1266 and 88532, that added together give a palindrome (89798).

The spelling of 126688532 in words is "one hundred twenty-six million, six hundred eighty-eight thousand, five hundred thirty-two".