400001202 has 24 divisors (see below), whose sum is σ = 867267180. Its totient is φ = 133241760.

The previous prime is 400001201. The next prime is 400001227. The reversal of 400001202 is 202100004.

It can be written as a sum of positive squares in 2 ways, for example, as 354154761 + 45846441 = 18819^2 + 6771^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (400001201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22324 + ... + 36032.

Almost surely, 2^400001202 is an apocalyptic number.

400001202 is an abundant number, since it is smaller than the sum of its proper divisors (467265978).

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

400001202 is a wasteful number, since it uses less digits than its factorization.

400001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15338 (or 15335 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 400001202 is about 20000.0300499774. The cubic root of 400001202 is about 736.8070377616.

Adding to 400001202 its reverse (202100004), we get a palindrome (602101206).

The spelling of 400001202 in words is "four hundred million, one thousand, two hundred two".