531230042 has 16 divisors (see below), whose sum is σ = 964249920. Its totient is φ = 214277568.

The previous prime is 531230039. The next prime is 531230047. The reversal of 531230042 is 240032135.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 531229996 and 531230023.

It is not an unprimeable number, because it can be changed into a prime (531230047) 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, 1115792 + ... + 1116267.

It is an arithmetic number, because the mean of its divisors is an integer number (60265620).

Almost surely, 2^531230042 is an apocalyptic number.

531230042 is a deficient number, since it is larger than the sum of its proper divisors (433019878).

531230042 is a wasteful number, since it uses less digits than its factorization.

531230042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232085.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 531230042 is about 23048.4281893582. The cubic root of 531230042 is about 809.8928080477.

Adding to 531230042 its reverse (240032135), we get a palindrome (771262177).

The spelling of 531230042 in words is "five hundred thirty-one million, two hundred thirty thousand, forty-two".