400042212200 has 48 divisors (see below), whose sum is σ = 931962300000. Its totient is φ = 159696169920.

The previous prime is 400042212173. The next prime is 400042212281. The reversal of 400042212200 is 2212240004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1904420 + ... + 2104019.

It is an arithmetic number, because the mean of its divisors is an integer number (19415881250).

Almost surely, 2^400042212200 is an apocalyptic number.

400042212200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400042212200 is an abundant number, since it is smaller than the sum of its proper divisors (531920087800).

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

400042212200 is a wasteful number, since it uses less digits than its factorization.

400042212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008954 (or 4008945 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 400042212200 its reverse (2212240004), we get a palindrome (402254452204).

The spelling of 400042212200 in words is "four hundred billion, forty-two million, two hundred twelve thousand, two hundred".