126400244 has 6 divisors (see below), whose sum is σ = 221200434. Its totient is φ = 63200120.

The previous prime is 126400231. The next prime is 126400247. The reversal of 126400244 is 442004621.

It can be written as a sum of positive squares in only one way, i.e., 79887844 + 46512400 = 8938^2 + 6820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126400247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15800027 + ... + 15800034.

It is an arithmetic number, because the mean of its divisors is an integer number (36866739).

Almost surely, 2^126400244 is an apocalyptic number.

It is an amenable number.

126400244 is a deficient number, since it is larger than the sum of its proper divisors (94800190).

126400244 is a wasteful number, since it uses less digits than its factorization.

126400244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31600065 (or 31600063 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 126400244 is about 11242.7863094519. The cubic root of 126400244 is about 501.8600637450.

Adding to 126400244 its reverse (442004621), we get a palindrome (568404865).

The spelling of 126400244 in words is "one hundred twenty-six million, four hundred thousand, two hundred forty-four".