400043024200 has 96 divisors (see below), whose sum is σ = 985257642600. Its totient is φ = 150536253440.

The previous prime is 400043024167. The next prime is 400043024231. The reversal of 400043024200 is 2420340004.

It can be written as a sum of positive squares in 12 ways, for example, as 193489135876 + 206553888324 = 439874^2 + 454482^2 .

It is a super-3 number, since 3×400043024200³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7825122 + ... + 7876078.

Almost surely, 2^400043024200 is an apocalyptic number.

400043024200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400043024200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492628821300).

400043024200 is an abundant number, since it is smaller than the sum of its proper divisors (585214618400).

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

400043024200 is a wasteful number, since it uses less digits than its factorization.

400043024200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53299 (or 53290 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 400043024200 its reverse (2420340004), we get a palindrome (402463364204).

The spelling of 400043024200 in words is "four hundred billion, forty-three million, twenty-four thousand, two hundred".