401243202 has 12 divisors (see below), whose sum is σ = 869360310. Its totient is φ = 133747728.

The previous prime is 401243189. The next prime is 401243209. The reversal of 401243202 is 202342104.

401243202 is a `hidden beast` number, since 401 + 243 + 20 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 230705721 + 170537481 = 15189^2 + 13059^2 .

It is a super-2 number, since 2×401243202² = 321992214302425608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22291289 = 401243202 / (4 + 0 + 1 + 2 + 4 + 3 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (401243209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11145627 + ... + 11145662.

Almost surely, 2^401243202 is an apocalyptic number.

401243202 is an abundant number, since it is smaller than the sum of its proper divisors (468117108).

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

401243202 is a wasteful number, since it uses less digits than its factorization.

401243202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22291297 (or 22291294 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 401243202 is about 20031.0559382175. The cubic root of 401243202 is about 737.5688428315.

Adding to 401243202 its reverse (202342104), we get a palindrome (603585306).

The spelling of 401243202 in words is "four hundred one million, two hundred forty-three thousand, two hundred two".