523242 has 24 divisors (see below), whose sum is σ = 1162980. Its totient is φ = 169920.

The previous prime is 523219. The next prime is 523261. The reversal of 523242 is 242325.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 114921 = 639^2 + 339^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 5⁸ + 2⁸ + 2¹⁰ + 3² + 4⁴ + 2¹⁷ .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384 + ... + 1092.

2⁵²³²⁴² is an apocalyptic number.

523242 is an abundant number, since it is smaller than the sum of its proper divisors (639738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523242 is a wasteful number, since it uses less digits than its factorization.

523242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 755 counting only the distinct ones).

The product of its digits is 480, while the sum is 18.

The square root of 523242 is about 723.3546847847. The cubic root of 523242 is about 80.5812869224.

Adding to 523242 its reverse (242325), we get a palindrome (765567).

It can be divided in two parts, 52324 and 2, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 523242 in words is "five hundred twenty-three thousand, two hundred forty-two".