400530122 has 16 divisors (see below), whose sum is σ = 623198400. Its totient is φ = 192925152.

The previous prime is 400530113. The next prime is 400530133. The reversal of 400530122 is 221035004.

It is a self number, because there is not a number n which added to its sum of digits gives 400530122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25622 + ... + 38177.

It is an arithmetic number, because the mean of its divisors is an integer number (38949900).

Almost surely, 2^400530122 is an apocalyptic number.

400530122 is a deficient number, since it is larger than the sum of its proper divisors (222668278).

400530122 is a wasteful number, since it uses less digits than its factorization.

400530122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63917.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 400530122 is about 20013.2486618240. The cubic root of 400530122 is about 737.1316537303.

Adding to 400530122 its reverse (221035004), we get a palindrome (621565126).

The spelling of 400530122 in words is "four hundred million, five hundred thirty thousand, one hundred twenty-two".