126428401 has 8 divisors (see below), whose sum is σ = 143918784. Its totient is φ = 109937520.

The previous prime is 126428389. The next prime is 126428411. The reversal of 126428401 is 104824621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126428401 - 2¹³ = 126420209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126428401.

It is not an unprimeable number, because it can be changed into a prime (126428411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 249606 + ... + 250111.

It is an arithmetic number, because the mean of its divisors is an integer number (17989848).

Almost surely, 2^126428401 is an apocalyptic number.

126428401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126428401 is a deficient number, since it is larger than the sum of its proper divisors (17490383).

126428401 is a wasteful number, since it uses less digits than its factorization.

126428401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499751.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 126428401 is about 11244.0384648933. The cubic root of 126428401 is about 501.8973258690.

The spelling of 126428401 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, four hundred one".