126133640 has 32 divisors (see below), whose sum is σ = 289160280. Its totient is φ = 49500672.

The previous prime is 126133627. The next prime is 126133717. The reversal of 126133640 is 46331621.

It can be written as a sum of positive squares in 4 ways, for example, as 114532804 + 11600836 = 10702^2 + 3406^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27629 + ... + 31868.

Almost surely, 2^126133640 is an apocalyptic number.

126133640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126133640 is an abundant number, since it is smaller than the sum of its proper divisors (163026640).

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

126133640 is a wasteful number, since it uses less digits than its factorization.

126133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59561 (or 59557 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 126133640 is about 11230.9233814500. The cubic root of 126133640 is about 501.5069734987.

The spelling of 126133640 in words is "one hundred twenty-six million, one hundred thirty-three thousand, six hundred forty".