400010122 has 8 divisors (see below), whose sum is σ = 604740096. Its totient is φ = 198430092.

The previous prime is 400010111. The next prime is 400010129. The reversal of 400010122 is 221010004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400010099 and 400010108.

It is not an unprimeable number, because it can be changed into a prime (400010129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787168 + ... + 787675.

It is an arithmetic number, because the mean of its divisors is an integer number (75592512).

Almost surely, 2^400010122 is an apocalyptic number.

400010122 is a deficient number, since it is larger than the sum of its proper divisors (204729974).

400010122 is a wasteful number, since it uses less digits than its factorization.

400010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574972.

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

The square root of 400010122 is about 20000.2530483992. The cubic root of 400010122 is about 736.8125146368.

Adding to 400010122 its reverse (221010004), we get a palindrome (621020126).

The spelling of 400010122 in words is "four hundred million, ten thousand, one hundred twenty-two".