126009280 has 28 divisors (see below), whose sum is σ = 300060360. Its totient is φ = 50403584.

The previous prime is 126009259. The next prime is 126009281. The reversal of 126009280 is 82900621.

It is a happy number.

It is a super-2 number, since 2×126009280² = 31756677292236800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126009281) 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, 196570 + ... + 197209.

Almost surely, 2^126009280 is an apocalyptic number.

126009280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126009280 is an abundant number, since it is smaller than the sum of its proper divisors (174051080).

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

126009280 is an equidigital number, since it uses as much as digits as its factorization.

126009280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393796 (or 393786 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 126009280 is about 11225.3855167651. The cubic root of 126009280 is about 501.3421009734.

The spelling of 126009280 in words is "one hundred twenty-six million, nine thousand, two hundred eighty".