400550126 has 16 divisors (see below), whose sum is σ = 608311296. Its totient is φ = 197794296.

The previous prime is 400550119. The next prime is 400550201. The reversal of 400550126 is 621055004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54185 + ... + 61131.

It is an arithmetic number, because the mean of its divisors is an integer number (38019456).

Almost surely, 2^400550126 is an apocalyptic number.

400550126 is a deficient number, since it is larger than the sum of its proper divisors (207761170).

400550126 is a wasteful number, since it uses less digits than its factorization.

400550126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 400550126 is about 20013.7484245206. The cubic root of 400550126 is about 737.1439252469.

The spelling of 400550126 in words is "four hundred million, five hundred fifty thousand, one hundred twenty-six".