126603652 has 18 divisors (see below), whose sum is σ = 257729262. Its totient is φ = 54258624.

The previous prime is 126603637. The next prime is 126603671. The reversal of 126603652 is 256306621.

It can be written as a sum of positive squares in only one way, i.e., 124188736 + 2414916 = 11144^2 + 1554^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 322773 + ... + 323164.

Almost surely, 2^126603652 is an apocalyptic number.

It is an amenable number.

126603652 is an abundant number, since it is smaller than the sum of its proper divisors (131125610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126603652 is a wasteful number, since it uses less digits than its factorization.

126603652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645955 (or 645946 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 126603652 is about 11251.8288291282. The cubic root of 126603652 is about 502.1291234643.

The spelling of 126603652 in words is "one hundred twenty-six million, six hundred three thousand, six hundred fifty-two".