126533540 has 48 divisors (see below), whose sum is σ = 319670400. Its totient is φ = 41098752.

The previous prime is 126533513. The next prime is 126533549. The reversal of 126533540 is 45335621.

It is not an unprimeable number, because it can be changed into a prime (126533549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21125 + ... + 26444.

It is an arithmetic number, because the mean of its divisors is an integer number (6659800).

Almost surely, 2^126533540 is an apocalyptic number.

126533540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126533540 is an abundant number, since it is smaller than the sum of its proper divisors (193136860).

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

126533540 is a wasteful number, since it uses less digits than its factorization.

126533540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47604 (or 47602 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 126533540 is about 11248.7128152514. The cubic root of 126533540 is about 502.0364147698.

The spelling of 126533540 in words is "one hundred twenty-six million, five hundred thirty-three thousand, five hundred forty".