126401056 has 12 divisors (see below), whose sum is σ = 248852142. Its totient is φ = 63200512.

The previous prime is 126400999. The next prime is 126401057. The reversal of 126401056 is 650104621.

It can be written as a sum of positive squares in only one way, i.e., 125888400 + 512656 = 11220^2 + 716^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 126401056.

It is not an unprimeable number, because it can be changed into a prime (126401057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974985 + ... + 1975048.

Almost surely, 2^126401056 is an apocalyptic number.

126401056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126401056 is a deficient number, since it is larger than the sum of its proper divisors (122451086).

126401056 is an equidigital number, since it uses as much as digits as its factorization.

126401056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950043 (or 3950035 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 126401056 is about 11242.8224214385. The cubic root of 126401056 is about 501.8611383988.

Adding to 126401056 its reverse (650104621), we get a palindrome (776505677).

The spelling of 126401056 in words is "one hundred twenty-six million, four hundred one thousand, fifty-six".