523323642 has 16 divisors (see below), whose sum is σ = 1047723840. Its totient is φ = 174261792.

The previous prime is 523323613. The next prime is 523323653. The reversal of 523323642 is 246323325.

It is a super-2 number, since 2×523323642² = 547735268552288328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38467 + ... + 50262.

It is an arithmetic number, because the mean of its divisors is an integer number (65482740).

Almost surely, 2^523323642 is an apocalyptic number.

523323642 is an abundant number, since it is smaller than the sum of its proper divisors (524400198).

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

523323642 is a wasteful number, since it uses less digits than its factorization.

523323642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89717.

The product of its digits is 25920, while the sum is 30.

The square root of 523323642 is about 22876.2680959985. The cubic root of 523323642 is about 805.8547776542.

Adding to 523323642 its reverse (246323325), we get a palindrome (769646967).

The spelling of 523323642 in words is "five hundred twenty-three million, three hundred twenty-three thousand, six hundred forty-two".