401422210 has 24 divisors (see below), whose sum is σ = 840529980. Its totient is φ = 137630304.

The previous prime is 401422201. The next prime is 401422211. The reversal of 401422210 is 12224104.

It can be written as a sum of positive squares in 2 ways, for example, as 378964089 + 22458121 = 19467^2 + 4739^2 .

It is a super-2 number, since 2×401422210² = 322279581362568200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401422211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409125 + ... + 410104.

Almost surely, 2^401422210 is an apocalyptic number.

401422210 is an abundant number, since it is smaller than the sum of its proper divisors (439107770).

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

401422210 is a wasteful number, since it uses less digits than its factorization.

401422210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819250 (or 819243 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 401422210 is about 20035.5237016655. The cubic root of 401422210 is about 737.6785112264.

Adding to 401422210 its reverse (12224104), we get a palindrome (413646314).

It can be divided in two parts, 401422 and 210, that multiplied together give a triangular number (84298620 = T₁₂₉₈₄).

The spelling of 401422210 in words is "four hundred one million, four hundred twenty-two thousand, two hundred ten".