206400126 has 32 divisors (see below), whose sum is σ = 422143488. Its totient is φ = 67252640.

The previous prime is 206400119. The next prime is 206400157. The reversal of 206400126 is 621004602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97855 + ... + 99941.

It is an arithmetic number, because the mean of its divisors is an integer number (13191984).

Almost surely, 2^206400126 is an apocalyptic number.

206400126 is an abundant number, since it is smaller than the sum of its proper divisors (215743362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206400126 is a wasteful number, since it uses less digits than its factorization.

206400126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 206400126 is about 14366.6323820163. The cubic root of 206400126 is about 590.9761929937.

Adding to 206400126 its reverse (621004602), we get a palindrome (827404728).

The spelling of 206400126 in words is "two hundred six million, four hundred thousand, one hundred twenty-six".