531242 has 4 divisors (see below), whose sum is σ = 796866. Its totient is φ = 265620.

The previous prime is 531239. The next prime is 531253. The reversal of 531242 is 242135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 28561 = 709^2 + 169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132809 + ... + 132812.

2⁵³¹²⁴² is an apocalyptic number.

531242 is a deficient number, since it is larger than the sum of its proper divisors (265624).

531242 is a wasteful number, since it uses less digits than its factorization.

531242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265623.

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

The square root of 531242 is about 728.8634988803. The cubic root of 531242 is about 80.9898884904.

Adding to 531242 its reverse (242135), we get a palindrome (773377).

The spelling of 531242 in words is "five hundred thirty-one thousand, two hundred forty-two".