126005243204 has 12 divisors (see below), whose sum is σ = 220514578284. Its totient is φ = 63001077984.

The previous prime is 126005243173. The next prime is 126005243293. The reversal of 126005243204 is 402342500621.

It can be written as a sum of positive squares in 2 ways, for example, as 22140844804 + 103864398400 = 148798^2 + 322280^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191339 + ... + 537234.

It is an arithmetic number, because the mean of its divisors is an integer number (18376214857).

Almost surely, 2^126005243204 is an apocalyptic number.

It is an amenable number.

126005243204 is a deficient number, since it is larger than the sum of its proper divisors (94509335080).

126005243204 is a wasteful number, since it uses less digits than its factorization.

126005243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771814 (or 771812 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 126005243204 its reverse (402342500621), we get a palindrome (528347743825).

The spelling of 126005243204 in words is "one hundred twenty-six billion, five million, two hundred forty-three thousand, two hundred four".