126400012 has 12 divisors (see below), whose sum is σ = 221754456. Its totient is φ = 63041600.

The previous prime is 126399979. The next prime is 126400013. The reversal of 126400012 is 210004621.

It is not an unprimeable number, because it can be changed into a prime (126400013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37798 + ... + 41005.

It is an arithmetic number, because the mean of its divisors is an integer number (18479538).

Almost surely, 2^126400012 is an apocalyptic number.

It is an amenable number.

126400012 is a deficient number, since it is larger than the sum of its proper divisors (95354444).

126400012 is a wasteful number, since it uses less digits than its factorization.

126400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79208 (or 79206 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 126400012 is about 11242.7759917202. The cubic root of 126400012 is about 501.8597567003.

Adding to 126400012 its reverse (210004621), we get a palindrome (336404633).

The spelling of 126400012 in words is "one hundred twenty-six million, four hundred thousand, twelve".