400122010 has 8 divisors (see below), whose sum is σ = 720219636. Its totient is φ = 160048800.

The previous prime is 400121999. The next prime is 400122029. The reversal of 400122010 is 10221004.

It can be written as a sum of positive squares in 2 ways, for example, as 395572321 + 4549689 = 19889^2 + 2133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 40012201 = 400122010 / (4 + 0 + 0 + 1 + 2 + 2 + 0 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20006091 + ... + 20006110.

Almost surely, 2^400122010 is an apocalyptic number.

400122010 is a deficient number, since it is larger than the sum of its proper divisors (320097626).

400122010 is a wasteful number, since it uses less digits than its factorization.

400122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40012208.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 400122010 is about 20003.0500174348. The cubic root of 400122010 is about 736.8812068929.

Adding to 400122010 its reverse (10221004), we get a palindrome (410343014).

The spelling of 400122010 in words is "four hundred million, one hundred twenty-two thousand, ten".