521042 has 16 divisors (see below), whose sum is σ = 836352. Its totient is φ = 242880.
The previous prime is 521041. The next prime is 521047. The reversal of 521042 is 240125.
521042 is nontrivially palindromic in base 7.
It is not an unprimeable number, because it can be changed into a prime (521041) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 2282.
It is an arithmetic number, because the mean of its divisors is an integer number (52272).
2521042 is an apocalyptic number.
521042 is a deficient number, since it is larger than the sum of its proper divisors (315310).
521042 is a wasteful number, since it uses less digits than its factorization.
521042 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 313.
The product of its (nonzero) digits is 80, while the sum is 14.
The square root of 521042 is about 721.8323905174. The cubic root of 521042 is about 80.4681921066.
Adding to 521042 its reverse (240125), we get a palindrome (761167).
The spelling of 521042 in words is "five hundred twenty-one thousand, forty-two".
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