531145442 has 8 divisors (see below), whose sum is σ = 797873232. Its totient is φ = 265187700.

The previous prime is 531145441. The next prime is 531145451. The reversal of 531145442 is 244541135.

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

It is not an unprimeable number, because it can be changed into a prime (531145441) 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, 190784 + ... + 193547.

It is an arithmetic number, because the mean of its divisors is an integer number (99734154).

Almost surely, 2^531145442 is an apocalyptic number.

531145442 is a deficient number, since it is larger than the sum of its proper divisors (266727790).

531145442 is a wasteful number, since it uses less digits than its factorization.

531145442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385024.

The product of its digits is 9600, while the sum is 29.

The square root of 531145442 is about 23046.5928501373. The cubic root of 531145442 is about 809.8498131342.

Adding to 531145442 its reverse (244541135), we get a palindrome (775686577).

The spelling of 531145442 in words is "five hundred thirty-one million, one hundred forty-five thousand, four hundred forty-two".