126728001 has 24 divisors (see below), whose sum is σ = 185342976. Its totient is φ = 83436480.

The previous prime is 126727987. The next prime is 126728003. The reversal of 126728001 is 100827621.

It is not a de Polignac number, because 126728001 - 2⁷ = 126727873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126728003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467496 + ... + 467766.

It is an arithmetic number, because the mean of its divisors is an integer number (7722624).

Almost surely, 2^126728001 is an apocalyptic number.

It is an amenable number.

126728001 is a deficient number, since it is larger than the sum of its proper divisors (58614975).

126728001 is a wasteful number, since it uses less digits than its factorization.

126728001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 126728001 is about 11257.3531969109. The cubic root of 126728001 is about 502.2934652825.

The spelling of 126728001 in words is "one hundred twenty-six million, seven hundred twenty-eight thousand, one".