531220042 has 8 divisors (see below), whose sum is σ = 800164800. Its totient is φ = 264498444.

The previous prime is 531220037. The next prime is 531220049. The reversal of 531220042 is 240022135.

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 (531220049) 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, 555192 + ... + 556147.

It is an arithmetic number, because the mean of its divisors is an integer number (100020600).

Almost surely, 2^531220042 is an apocalyptic number.

531220042 is a deficient number, since it is larger than the sum of its proper divisors (268944758).

531220042 is a wasteful number, since it uses less digits than its factorization.

531220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111580.

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

The square root of 531220042 is about 23048.2112538045. The cubic root of 531220042 is about 809.8877261445.

Adding to 531220042 its reverse (240022135), we get a palindrome (771242177).

The spelling of 531220042 in words is "five hundred thirty-one million, two hundred twenty thousand, forty-two".