126400011 has 8 divisors (see below), whose sum is σ = 170842320. Its totient is φ = 83112192.

The previous prime is 126399979. The next prime is 126400013. The reversal of 126400011 is 110004621.

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

It is not a de Polignac number, because 126400011 - 2⁵ = 126399979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126400013) 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, 288366 + ... + 288803.

It is an arithmetic number, because the mean of its divisors is an integer number (21355290).

Almost surely, 2^126400011 is an apocalyptic number.

126400011 is a deficient number, since it is larger than the sum of its proper divisors (44442309).

126400011 is an equidigital number, since it uses as much as digits as its factorization.

126400011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577245.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 126400011 is about 11242.7759472472. The cubic root of 126400011 is about 501.8597553768.

Adding to 126400011 its reverse (110004621), we get a palindrome (236404632).

The spelling of 126400011 in words is "one hundred twenty-six million, four hundred thousand, eleven".