400241530 has 16 divisors (see below), whose sum is σ = 775853064. Its totient is φ = 147781440.

The previous prime is 400241509. The next prime is 400241533. The reversal of 400241530 is 35142004.

It can be written as a sum of positive squares in 4 ways, for example, as 203148009 + 197093521 = 14253^2 + 14039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400241498 and 400241507.

It is not an unprimeable number, because it can be changed into a prime (400241533) by changing a digit.

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, 1539261 + ... + 1539520.

Almost surely, 2^400241530 is an apocalyptic number.

400241530 is a deficient number, since it is larger than the sum of its proper divisors (375611534).

400241530 is a wasteful number, since it uses less digits than its factorization.

400241530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078801.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 400241530 is about 20006.0373387635. The cubic root of 400241530 is about 736.9545705768.

Adding to 400241530 its reverse (35142004), we get a palindrome (435383534).

The spelling of 400241530 in words is "four hundred million, two hundred forty-one thousand, five hundred thirty".